I notice that's a Gibbz (or Gibbz-type) upper. Reliability is the main concern for me when I re-barrel this rifle. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Its also recommended you polish the ramps once youve achieved the appropriate angle. In short, if you have a Dremmel you can do it yourself. 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. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. 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. All we do is dremmel it to match - we dont remove it and grind to any specific angle. You wrote that much to make a point that should have taken about 100 words? I've thought about it myself, and I'd like to see test results if any exist, displaying what reliability effect M4 ramps have on other barrel lengths. 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. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) One new winner* is announced every week! Is getting it as part of the upper better? Only took a few minutes. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. Jams and misfires. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Just because you can, doesn't mean you should. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. The magazine lips cannot move, so with these larger diameter cartridges, the bullet tips down lower about the centerline of the bore (half of the diameter increase to be exact). AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. If this is your first visit, be sure to By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. Does NOT include pin 3. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. Thanks for explaining the feed ramp topic in a couple of different ways. A couple of times I ended up with the OK set up from the picture above. I'm assuming that you only need the ramps from one or the other. After two months of back and forth, cleaned up the feed ramps. Ideally both. 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. Modern Series Barrels. Factory said its fine . Sorta. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. The M-16/M4 are great weapons. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. Get The Best Trigger Pull Gauges To Make Every Shot Count. I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. By So I called. #2. I like all my guns to be reliable. This is one time it's better to go a little too far than to leave an edge for the . 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. Press J to jump to the feed. 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 So, what is the difference between M4 feed ramps and regular ones? This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. M4 ramps help in feeding in for carbine in full auto. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. M4 Feed ramps on barrel extensions are a solid example. Some suggest taking a grinder to the extension area. The photo shows the dents and the bolt lugs line up perfectly. If your magazines are set up correctly, and the feed lip edges polished smooth, each round fed from the magazine will go directly into the chamber. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. FN AR-15 5.56X45mm Nato . The ramps are in the barrel extension. 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. This is a big tip, by the way, for pistol-caliber ARs. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. 's blog. It's best to use rifle/rifle combo or M4/M4. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. It gives a longer ramp that is less steep into the chamber. My experience with ARs is all A-1s. Its fine to use an M4 Barrel with a non-N4 (rifle) upper but if you have the barrel already is much simpler to just buy a M-4 upper and just replace the upper the barrel is harder to build..I have even cut ramps on a rifle upper and it really wasent needed That is before I knew better.Then I guncoted the ramps before I found out about Aluminum Black treatment. *Must have a registered ARFCOM account to win. Feed ramps on barrel extensions are a good example. I got my help from this thread, and thank you again to ORD. 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. Create an account to follow your favorite communities and start taking part in conversations. Experts advise on 31 degrees+30 minus-zip. JavaScript is disabled. is the m4 feedramp common in barrel extensions? which is bad combo. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. 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. I'm planning on replacing my forearm with a Larue 13.5. DSA has fat top, Mueller, non feed ramp uppers for $40. Any use of this content without express written consent is prohibited. Edited April 27, 2014 by Mark Gale In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. My alternative plan is to do exactly as you describe. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. well.. it's kinda hard to get stuff in this part of the world. which is basicallly an m16a1 cut down. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. You need to match up barrels to receivers for optimum performance. All uppers are assembled cleaned and tested before shipping. LanceRiley, The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. Description. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . First of Im not a gunsmith or firearms professional. Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About I just need a little guidance on this and I'm having trouble getting good results from Google. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Reddit and its partners use cookies and similar technologies to provide you with a better experience. All NFA rules apply. 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. EDIT: Okay, I understand now! Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Change the angle so that the ramp ends at the exact same point. Man, its crazy how many of yall have absolutely no idea why you do what you do. Single Action and Double Action Which One Is Better For You? The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. upper recievers and barrels are hard to comeby. We're a little past that point as I already own both the barrel and receiver, both of which cant easily be replaced or swapped for a decent price. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). So, an M4 feed ramp includes the barrel extension and the upper. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. Use this M4 Barrel extention with M4 feedramps. I can still use the combination. 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). No need to alter the upper. Our 6.5 Grendel Black Nitride rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy at a great price. Don't forget read more information about it here! Bear Creek Arsenal Barrels - 6.5 Grendel Type 2 Barrel This Gorilla Machining AR-15 16" heavy Black Nitride 6.5 Grendel barrel has a Carbine length gas system with a 1:8 twist. FWIW one of my rifles has M4 feed ramps on the barrel and no M4 feed ramps on the upper and it has functioned just fine. We want you, our readers, to be able to make informed decisions. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. You need to match up barrels to receivers for optimum performance. 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 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? The leading cause that leads to the development of the M4 feed ramp is the gas pressure from the carbine gas system that is increasing along with a high cyclic rate. It's going to a gunsmith to be shortened and rethreaded anyways, can they just grind/polish the feed ramps to match or is it more involved than that? Full M4 feed ramps start on the upper and continue onto the barrel extension. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. Site towers are not "F" marked SPECS: Length- 14.5". what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. 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. 5. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. But, as with anything else, this work can go too far. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. Clear editor. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. 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 Is one better than the other? My factory JP CTR-02 has the appearance of the bottom right picture in the post above, M4 barrel extension in a rifle receiver, and there is not a mark on the aluminum under the barrel extension. If a barrel comes with the feed ramps could I take them off? All Rights Reserved. You can post now and register later. A feed ramp is a basic feature of many breech loading cartridge firearm designs. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. 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. The parts are interchangeable. M4 feed ramps will extend the barrel extension and the upper receiver. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. I too built a .458 SOCOM carbine . Now, theres nothing wrong at all with a little polish on any and all feed ramps, which can not only be done fairly easily, it can be successfully done by most at home. JavaScript is disabled. A4 Complete Upper Receiver. 2. We have four combinations here: I can probably get the upper reciever first. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. If I can correct an issue before it's an issue that is preferred. and add them to non-m4 barrels.? It is milled out of 6061 T6. Full M4 feed ramps are on both the upper and barrel extension. Lol. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! Feels like a silly question now that it makes sense. 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. For a better experience, please enable JavaScript in your browser before proceeding. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . hey bro nice to see you here!!! Married pretty well with my Seekins machined lower. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. Paste as plain text instead, Guess what? The upper I want to rebarrel is modified for Service Rifle competition so it's not quite as cheap as buying another $89 upper from Aero. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. 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). They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. And that is the important thing! I checked what I have now. 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. Konza Defender M-LOK 5.56 16" Rifle 1x7 FEATURES: 16" 4150 Nitride 1x7 5.56 Barrel T-Marked Upper with M4 Feed Ramps Steel Micro Gas Block, and Carbine Length Gas Tube 15" 7075 T6 Aluminum Free Float M-LOK Hand Guard A2 Muzzle Break BCG is an M16 Style Nitride QPQ Finish Charging Handle Mil-Spec 6 Position Mil-Spec Diameter Stock aaargh.. that's the setup I hate to see. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. True, which is why they're not even needed in semi autos. It's an interesting question. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. Damaged Ak front end Barrel in Trunnion with or without sight bases. -The Barrel MUST be removed from the Upper Receiver in order to use this Kit.-Never cut or polish the aluminum M4 Feed Ramps in your upper receiver! M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Thanks! Also, barrel life is relative. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. What is an m4 feed ramp? 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. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? The mil actually only specs M4 feed ramps for use in its M4s. 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. However, they do have M4 feed-ramps which is not clone correct. Notify me of follow-up comments by email. Would not feed to save its life! The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). So I'm working on my first build, and I'm a little confused. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? So there's a lot more going on with rounds bouncing up and down in the mags etc. I will check with compass lake. You have a rifle barrel. I prefer them. If you consider this article useful, share it with anyone in need! Personally, I would sell the rifle upper and buy an M4 upper - the cost will be small and you will end up with a more satisfactory end product. For a better experience, please enable JavaScript in your browser before proceeding. The barrel blanks available are made from 416 Stainless Steel. i have the rifle barrel. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. *Must have a registered ARFCOM account to win. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. So, lets glide down these lines below to erase your misconceptions about them. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. You also repeated yourself. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Looking For Bear Creek Arsenal Barrels Review? Having been in military supply, I know that what the mil-spec means: it gets the minimum job done for thousands (millions) of parts/systems. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. AR9 - Help diagnosing feeding issue. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Pasted as rich text. As they are becoming more and more a standard, and certainly do not do any harm to us. With a larger diameter case body sitting down in the magazine, the tip of the bullet sits lower in relation to the chamber/bore centerline than with a .223-size round.
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