adding m4 feed ramps to barrel adding m4 feed ramps to barrel

Regular feed ramps are cuts into the barrel extension only, which allows guiding the round into the chamber during loading, making them a fundamental feature of many breech-loading firearm designs. A4 Complete Upper Receiver. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. For this test, I used a Colt upper with M4 feed ramps and a SOCOM heavy 14.5 barrel, just like what is used in the military. I was planning on using a Daniel Defense 14.5 pencil barrel, because like the C8 they are CHF, lightweight profile, and .750 at the FSB (And also because quality carbine pencil barrels with .625 gas blocks seem to be in short supplyor else I'd just build a 723 clone.) . Good call. Home Firearms Figuring Out Feed Ramps. M16s and M16-A1s run at 750 rounds per minute in full auto. Go slow and you'll be done in no time. You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers. well.. it's kinda hard to get stuff in this part of the world. I've shot a good deal of rounds through 20" A2's and I realize they run but you are describing issues that the M4 feed ramps alleviate, that would probably be good to reduce on A2's as well. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. So, what youre saying is that an M16 upper (not M4 cut) will work with either barrel, but an M4 cut upper will only work with an M4 cut barrel. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? . As they are becoming more and more a standard, and certainly do not do any harm to us. Is one better than the other? again, Thanks. You will be able to leave a comment after signing in, AR15Armory.com Whether they materialize or not depends on the direction of the mismatch. The tip of the cartridge rarely comes into contact with the upper receiver. I have a non ramped barrel in a ramped upper, feeds fine. The best case is to have both an upper and barrel that have the feed ramps. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. The trust part is accepting claims of USGI-spec parts actually being done to not only blueprint dimensions, but also made from the correct materials treated to the same processes. Also, barrel life is relative. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. America's Ultimate Shooting Sports Discounter, Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Pinterest (Opens in new window). Reliability is the main concern for me when I re-barrel this rifle. My experience with ARs is all A-1s. It's an interesting question. However, if youre wanting to rebarrel a non-M4-cut upper with an M4 feed-ramp equipped barrel, or going the other direction: you have a new upper thats been relieved to fit with the M4 ramps, and a non-M4-cut barrel extension, and that wont work! The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. I'm planning on replacing my forearm with a Larue 13.5. Watch a video about our Modern Series AR barrel: Ready to drop onto a complete lower receiver. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Upper Receiver, A4, Flat Top, USGI, Numbered, AR-Stoner Upper Receiver Stripped AR-15 A3 Flat-Top Matte, Black River Tactical 16 Cold Hammer Forged Optimum Barrel Accuracy Evaluation. However, they do have M4 feed-ramps which is not clone correct. 4. Should not be too hard. The M4 cut extends down beyond the edge of the barrel extension (has a scalloped appearance), and a correspondingly deeper cut in an M4-spec upper receiver effectively extends the ramps downward (they're lowered). The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. Anodized red parts. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. Using an upper with M4 feed ramps with a barrel that does not have them will lead to feed problems as it creates a ledge/lip that can catch the bullet tip as it tries to feed. Lol. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . I like all my guns to be reliable. Please be respectful of others. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Caught a deal on a matched barrel and bolt. Site towers are not "F" marked SPECS: Length- 14.5". $101.95. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. Press J to jump to the feed. 30 cal. . The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). Please allow 5~10 days for assembly and testing before ship date. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! There are several, but Steve and the guys at ADCO in OH are one such option (they use the Dremel method, but they do it right as I have seen several first-hand examples of their work and its performance after the fact). It's not worth changing the barrel extension on an already finished barrel, getting the new barrel extension to line up correctly with the gas port will probably cost more in gunsmithing/machining fees than buying a new barrel. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. FN AR15 barrels are hammer forged using the same proprietary high-grade Chrome Moly Vanadium steel used in FN's venerable machinegun barrels produced to handle the punishment of . Do you have an AR barrel or feed ramp tip? Barrel customizations are also available. The last is using the best and right ammo for the job. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? I'm assuming that you only need the ramps from one or the other. if you are OK with 3MOA, you might go 20,000 rounds! Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Gas block area is .750 diameter. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. While this gun is a more of novelty build than a "serious use" AR, I intend to use good parts and want it to run as well as my other ARs. aaargh.. that's the setup I hate to see. JavaScript is disabled. Change the angle so that the ramp ends at the exact same point. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. . By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. Full M4 feed ramps start on the upper and continue onto the barrel extension. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. i have the rifle barrel. Ok, So, in short, I've got a barrel on my Armalite upper (with M4 feed ramps in the upper) that has standard AR-15 (non-M4) ramps. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. Additionally, in this increasingly specialized world of AR-15 parts that we live in, there are proprietary feed ramp cuts used for some alternate cartridges, such as .458 SOCOM. Issues can arise when receivers and barrel extensions are mismatched. For new construction barrels only. With the bcg moving that much faster, the magazine springs were having a hard time supplying the rounds fast enough, AS WELL AS the tips of the rounds were digging into the feed ramps and catching. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. Remember less is more, little by little. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. FN AR-15 5.56X45mm Nato . Feels like a silly question now that it makes sense. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Theres a bit more to it than just polishing. I prefer them. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. Display as a link instead, However, an M4 barrel extension is dished more so the feed ramps could extend downward, and then an area within the upper is shaped to match. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. You want them to match. Sent back again. I didnt think anything about it having M4 feed ramps. Forged 7075-T6 aluminum is harder than a bulls balls. Avoid Polishing Too Lightly Or Too Roughly When you purchase through links on our site, we may earn an affiliate commission, which supports our community. You wrote that much to make a point that should have taken about 100 words? The extension is the part at the end of the barrel that fits inside the upper. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. I can still use the combination. However Ive built numerous ar15 and lr308 rifles and pistols. Share it in the comments section. You can post now and register later. What is an m4 feed ramp? I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . What is the difference between Modern, Performance, and Premium Series Barrels? EDIT: Okay, I understand now! Thats why AR10s- And Scar heavies exist for. Full M4 feed ramps start on the upper and continue onto the barrel extension. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. ago KrinkyDink2 9 hr. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. Shorter length equates to much higher pressure in the upper receiver. Don't forget read more information about it here! Here's some info from Randall Rauch aka www.ar15barrels.com, if your barrel extension has M4 ramps you should have an upper receiver also with the ramps. I'll probably build a pistol out of this one. The M4 was the first (allegedy) carbine length gas system. You absolutely do not want it the other way around however. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. So there's a lot more going on with rounds bouncing up and down in the mags etc. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. I checked what I have now. Barrel Length: 16" Barrel Material: 4150V Chrome Moly Vanadium Steel Barrel Finish: Phosphate Barrel Profile: M4 Chamber: 5.56 NATO Twist Rate: 1 in 7" Extension: M4 Gas System: Carbine-Length Gas Block Type: Low Profile .750" Diameter Upper Receiver: Forged 7075 T6 Aluminum Receiver Style: M4 Flat top with feed ramps Receiver Finish: Hardcoat Anodized These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. Reach in through the ejection port and slide the on deck cartridge about 1/4 inch forward and observe the tip of the bullet in relationship to the barrel extension. There is a picture of the various options, hopefully another poster can link them. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. So I'm thinking I ought to have M4 ramps in the gun because based on what I've read: Rifle receiver+M4 barrel = "OK" but not ideal. This has been my concern with modifying the aluminum parts. So the engineers lowered the feed rampa into the receiver. M4 feed ramps were created during the development of the xM4 carbine for the original Army requirement of a carbine rifle that used the then current M16A2 upper receiver, 14.5" Barrel and had featured a collapsible sliding stock. For a better experience, please enable JavaScript in your browser before proceeding. You can modify the upper, but bear in mind that the un-anodized aluminum surface will be very soft and prone to wear if your particular bullet hits it frequently. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Man, its crazy how many of yall have absolutely no idea why you do what you do. We have four combinations here: JavaScript is disabled. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. Does NOT include pin It's best to have M4 ramps on both the upper and barrel. After two months of back and forth, cleaned up the feed ramps. 1 is a standard and the other for use with m4 feed ramp barrels. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. So, I had purchased a 458 upper. This 20" BCM barrel is machined from SS410 stainless steel. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. It may not display this or other websites correctly. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. They are better! You must log in or register to reply here. There's no downside to having M4 feedramps on your carbine, but they are not as necessary without full auto and when using followers that will not tilt (or in a 20 AR15). BEFORE YOU GO MODIFYING IT, check your headspace.I have a Gibbz upper in my junk drawer because the upper -- for some reason -- wouldn't allow a perfectly good bolt (as checked by Criterion) to headspace correctly on a Criterion barrel, with the bolt installed in the carrier. One new winner* is announced every week! "It will last 5k rounds instead of 4k. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Check often for fit. You can run M4 cut barrels with rifle receivers, but not the other way around as it will create at catch that can hang up the bullets. Some suggest taking a grinder to the extension area. Only took a few minutes. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. Paste as plain text instead, I have looked and looked and looked. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. M4 feed ramps. Thanks for explaining the feed ramp topic in a couple of different ways. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. Now move move the on deck cartridge forward to the 3/8 of inch position and again note the position of the tip of the bullet in relationship to the barrel extension. Your email address will not be published. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Press question mark to learn the rest of the keyboard shortcuts. Barrel, sight and trigger work on most pistols and shotguns. So, an M4 feed ramp includes the barrel extension and the upper. You have a rifle barrel. And that is the important thing! Upload or insert images from URL. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. Copyright 1996-2023 AR15.COM LLC. Modern Series Barrels. However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. So I'm working on my first build, and I'm a little confused. I'm a machinist in the aerospace industry and lucky enough to have. Olympic Arms Upper receiver with rear sight assembly and forward assist and dust cover has M4 feed ramps $260 View attachment 1016575 View attachment 1016576 Brevity matters. The barrel Throat is the second most critical component after angles and should be polished with utmost care. All Rights Reserved. "A Bad Day At The Range Is Better Than A Great Day Working". Being a Newbie AR owner ((Ive been an avid gun owner for nearly 50 years), I appreciate the information and visual aids that Im sure will be a big help in enjoying and using this gun platform. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. The M4 cut extends down beyond the edge of the barrel extension (has a scalloped appearance), and a correspondingly deeper cut in an M4-spec upper receiver effectively extends the ramps downward (theyre lowered). Thread: Adding M4 feedramps to A1/C7 upper. I'd rather not spent the money to get it cut to the specific length I need, FSB installed, etc just to have it immediately not work and have to sort out then or start from square one with a new barrel. Get The Best Trigger Pull Gauges To Make Every Shot Count. 5. pictures would help. Some argue that, factually, its a step to enable a smoother feeding. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). Then you can get a regular rifle barrel for the upper with no ramps. Seems M4 is all the rage these days. Married pretty well with my Seekins machined lower. AR9 - Help diagnosing feeding issue. There's a 7 degree difference between standard and M4 ramps. The parts are interchangeable. No feed ramps. instead of mil-spec. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. I cant advise on that one folks. It is a tightly machined and polished piece of metal which guides a cartridge from the top of the magazine into the firing chamber of the barrel. On the other hand, I wouldn't consider them as a deal breaker, and they would not pass up a good deal with an upper only because it did not have them - the M4 feed ramps. I recently picked up a barrel that I thought had M4 feed ramps, but it doesn't line up with my M4 feed ramp upper. You can run M4 cut barrels with rifle receivers, but not the other way around as it will create at catch that can hang up the bullets. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. so it is better to have an upper reciever that's designed for non-m4 feed ramps since you can put in standard barrels right? CARBON-15 Stripped Lower Receiver Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. Again, youll find plenty of videos on spooling up hand grinders to remedy feed ramp and ejection port issues with these larger cartridges, but I strongly suggest going factory-done aftermarket. A couple of times I ended up with the OK set up from the picture above. This is one time it's better to go a little too far than to leave an edge for the . I have seen it done many, MANY times and if done right, it works/functions 100% without issue. The information provided here does not represent the views of Cheaper Than Dirt! All comments are held for moderation and will appear after approval. Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. Single Action and Double Action Which One Is Better For You? I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Went back to the sellers website and found I was not the only one with problems. - The Shooter's Log, 2012 SHOT Show Special Report: Daniel Defense DDM4 V5 in .300 Blackout and a Factory SBR - The Shooter's Log, 2012 SHOT Show Special Report: SOG Armory Predator Rifle - The Shooter's Log, Surefire's 100-Round MAG5-100: The Highest Capacity AR-15 Magazine - The Shooter's Log, Throwback Thursday: Taurus Judge Range Report, ATI Milsport SGA 410 All the Advantages of an AR in .410, Ruger SR1911 LW Commander The Lightweight .45 ACP, Rifle Hack: Sighting for 100 Yards at a Distance of 25 Yards, Throwback Thursday: All About Bullet Grain. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. A closer look at uppers and barrel extensions. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Proper maintenance and lubrication. A forum community dedicated to drag racing drivers and enthusiasts. Its also recommended you polish the ramps once youve achieved the appropriate angle. Thanks! For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. I too built a .458 SOCOM carbine . Powered by Invision Community. So, lets glide down these lines below to erase your misconceptions about them. Any use of this content without express written consent is prohibited. Any body need a anchor for a very small boat? M4 Feed ramps on barrel extensions are a solid example. They . M4 feed ramps will extend the barrel extension and the upper receiver. By Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. Notice how the ramp starts on the barrel extension and not in the receiver. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. The barrel blanks available are made from 416 Stainless Steel. Jams and misfires. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. If it was some flat top + 16" FSB barrel id just swap upper/barrel, but this is a little more challenging to do that with. Full M4 feed ramps are on both the upper and barrel extension. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. I can assure you that most mods that deviate from the original design aren't 100% reliable. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? For those who have actually done it will a new barrel with the M4 feed ramp extension function properly with an old school rifle-type upper receiver? Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. Dec 17, 2020. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. I use it for hunting dogs only. upper recievers and barrels are hard to comeby. Either way is good and both types work great with semi auto only guns. Is getting it as part of the upper better? AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. colt A1E1 733 uppers didn't have extended carbine feedramps ? Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. First, the M4 barrel and non-M4 upper isnt likely to cause issues, but due to the relief cut on an M4-spec upper, there will be a gap that works like an edge that most definitely can snag the bullet and stub the round. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps Edited April 27, 2014 by Mark Gale A couple of times I ended up with the OK set up from the picture above. I just need a little guidance on this and I'm having trouble getting good results from Google. Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . Semi autos run slower than full autos. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. I have done the same, protect the Barrel extension with a layer of electrical tape and carefully file or Dremel the ramps into the aluminum receiver. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. SKU: BCM-URG-M4-16 Features: M4 Feed Ramp Barrel Extension Caliber: 5.56 NATO Barrel Length: 16in Barrel Style: Standard Handguard: None BCM M4 Handguards (Double Heat Shield) - Black + $15.00 PKMR (Polymer KeyMod Rail) Carbine Length - Black + $24.95 PKMR (Polymer KeyMod Rail) Carbine Length - Flat Dark Earth + $24.95 Stock Status: Out of stock which is basicallly an m16a1 cut down. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. In case My barrel is rifle ramp it won't be so bad after all. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. An upper without feed ramps can be used with a barrel that has them as the majority of the ramp is on the barrel extension. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. By What's the difference? Required fields are marked *. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. Feeds flawlessly. Would not feed to save its life! I'd get jams from bullets hitting the back of the upper so I took a small round file and made the M4 ramps in the upper. Guess what? Since the M4 barrel is one and a half inches shorter than the minimum legal barrel you can install in an AR15, the M4 gas tube will be, of course, smaller. A shorter gas tube means reduced gas pressure, and we all know what happens when there isn't enough pressure to cycle the bolt carrier group properly. UPPER RECEIVER: AR-15 Mil-Spec Machined out of 7075-T6 Forged Aluminum, M4 Feed Ramps, Cerakoted Magpul Flat Dark Earth (FDE) Color with Forward Assist and Ejection Port Cover Installed BARREL: 22 inch, 223 Wylde Caliber, 4150 CMV, 1:7 Twist, Heavy Bull Barrel Profile, Straight Fluted, Melonite/Nitride Finish - made for us by Tactical Kinetics HAND M4 Feed ramps on barrel extensions are a solid example. I'd get jams from bullets hitting the back of the upper so I took a small round file and made the M4 ramps in the upper. Try this little exercise: 1. All uppers are assembled cleaned and tested before shipping. Here you can see an upper with "rifle" feedramps. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. All Rights Reserved. 2. Earlfillmore 13 hr. Experts advise on 31 degrees+30 minus-zip. which is bad combo. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. They were not intended to be super long range man killers. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. Press question mark to learn the rest of the keyboard shortcuts. Copyright 1996-2023 AR15.COM LLC. Create an account to follow your favorite communities and start taking part in conversations. is the m4 feedramp common in barrel extensions? The rifle-platform M16s dont use them. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. FFL Fax: 866-721-8691. I should have taken my own advice for once. Read Now. Press J to jump to the feed. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. The reason I decided to write about this topic at all was because there are some mil-spec features advertised on aftermarket parts that arent even really mil-spec. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces I've seen that pic, it is a good reference. I had seen these pix years ago and dismissed the idea of mix and match. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. The ramps on the regular rifle-type extension are cut just to the edge of the extension. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver.