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what does it do?? I can still use the combination. M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just Thats true overall and good to keep in mind. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. 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). These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. The last is using the best and right ammo for the job. Some suggest taking a grinder to the extension area. All Rights Reserved. A closer look at uppers and barrel extensions. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. May 17, 2008 in The Armorer. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. Barrel customizations are also available. 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! 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. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. . what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. practical_man You need to match up barrels to receivers for optimum performance. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. Sent back again. Only took a few minutes. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. If you consider this article useful, share it with anyone in need! Gas block area is .750 diameter. DSA has fat top, Mueller, non feed ramp uppers for $40. Read Now. M4 Barrel Extension (M4 Feedramps) $22.95 (4 reviews) SKU: Barrel-Extension-M4 Stock Status: Quantity: Add to Wish List Description For your AR15, M16, M4. Mil-spec is good for the masses, and if you want the job done it is a great start. This is one time it's better to go a little too far than to leave an edge for the . CARBON-15 Stripped Lower Receiver Paste as plain text instead, The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. Sorta. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Standard vs M4 Feed Ramps, what's the difference #1056 Bullets tend to bump, snag, and stub on these guns. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. 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? I'm planning on replacing my forearm with a Larue 13.5. One new winner* is announced every week! The ramps on the regular rifle-type extension are cut just to the edge of the extension. Thread: Adding M4 feedramps to A1/C7 upper. It's best to use rifle/rifle combo or M4/M4. 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? 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 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. It's near impossible to replace the carry handle upper I have these days, and finding a colt chrome lined 20" light weight barrel isn't a walk in the park either. The manufacturer said they had sold hundreds of barrels with out problems reported. Previous. Then the manufacturer discontinued the barrel. This is why you can use a barrel with an extension with M4 feedramps with a receiver that does not have feedramps, but you cannot use a receiver with M4 feedramps with a barrel with an extension with rifle feedramps. DoubleStar M4 clone opinions | Survivalist Forum The mil actually only specs M4 feed ramps for use in its M4s. [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 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. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? Notice how the ramp starts on the barrel extension and not in the receiver. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. M4 Feed ramps on barrel extensions are a solid example. AR9 - Help diagnosing feeding issue - Calguns.net Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. so im thinking I might as well just get the unramp upper. However, I have seen more than a few basement gunsmith hackjobs using a dremel, some Jack Daniels/liquid courage, and an unsteady hand that have made a total, unrepairable mess of the job. Copyright 1996-2023 AR15.COM LLC. M4 Feedramps - AR-15 Pro . I wouldn't be concerned at all with any wear after modifying an upper receiver. I picked up a side charging upper from Sundevil last year. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. 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. There's a 7 degree difference between standard and M4 ramps. They were not intended to be super long range man killers. 6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas if you are OK with 3MOA, you might go 20,000 rounds! But, as with anything else, this work can go too far. Watch a video about our Modern Series AR barrel: So the engineers lowered the feed rampa into the receiver. 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). By my estimates, the tip of the bullet first hits the barrel extension about 1/3 of the way up the respective feed ramp on the barrel extension. Del-Ton, Inc. AR-15 16" M4 Custom Upper i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. 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. The M4 Style Feed ramps And Barrel Extension Provide Consistent Feeding And The Matte Black Manganese Phosphate Finish resists External Corrosion And OxidationLength: 14.70"Model: AR-15Finish: Manganese PhosphateBarrel Type: Carbine LengthBarrel Features: Chrome-LinedManufacturer: FN Mfg Number: 20-100405Model: AR-15 . All Rights Reserved. As suggested, its best to match the upper and barrel extension no worries that way. Is getting it as part of the upper better? Brevity matters. What is the difference between Modern, Performance, and Premium Series Barrels? Looking For Bear Creek Arsenal Barrels Review? If you have an account, sign in now to post with your account. Notify me of follow-up comments by email. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. 2. 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. If you aren't 110% comfortable with doing the job, and you do not have all the tools and equipment to do it properly, then have a smith do it for you. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. 11.5", SBN, 1:7, 5.56 NATO Barrel 308 m5 using m4 feed ramps, which I belive are for the smaller round like. If I was concerned with precision, I would seek out parts from well-known gun makers and customizers Baer comes to mind, Hart barrels, etc etc. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Is it worth the extra 50 bucks?" Your previous content has been restored. Does NOT include pin The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. This is a big tip, by the way, for pistol-caliber ARs. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. Site towers are not "F" marked SPECS: Length- 14.5". Polishing the edges of the chamber mouth to remove the edges of that chamfer will. Either way is good and both types work great with semi auto only guns. The barrel extension and the receiver both have to have the cuts. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. and add them to non-m4 barrels.? Semi autos run slower than full autos. Full M4 feed ramps start on the upper and continue onto the barrel extension. Edited April 27, 2014 by Mark Gale The Mission of Cheaper Than Dirt! Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. M4 feed ramp barrel in a non M4 ramp upper - AR15.COM Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) You cannot paste images directly. Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About 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 suggest you get a rifle receiver. Guess what? One of the AR15 engineers under Gene Stoner pretty much said that the M4 isn't a good platform, especially once the gas port erodes a bit. The ramps are in the barrel extension. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM -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! Questions on how to install your new BA barrel? The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Your link has been automatically embedded. Interesting reading. Create an account to follow your favorite communities and start taking part in conversations. Please allow 5~10 days for assembly and testing before ship date. Good call. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. "A Bad Day At The Range Is Better Than A Great Day Working". I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. 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? Most work performed while-you-wait, evening and saturday appointments available. Backing up a ton: The ramps on regular barrel extension are cut just to the edges, while the M4 feed ramps have deeper cuts in the M4-spec upper receiver. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. 3. 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. You need to match up barrels to receivers for optimum performance. How to Clone the M16A2 Rifle - The New Rifleman With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Feeds flawlessly. M4 feed ramps. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). aaargh.. that's the setup I hate to see. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. No need to alter the upper. Proper maintenance and lubrication. 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. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. 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. Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum Just because you can, doesn't mean you should. The barrel Throat is the second most critical component after angles and should be polished with utmost care. Damaged Ak front end Barrel in Trunnion with or without sight bases. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. A4 Complete Upper Receiver. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). By Yamil Sued August 6, 2021. These units actually feature the NON-F-Marked (correct) front sight base. Some, me included, have said that the M4 ramps are a help to some of the larger-diameter cartridges in use, such as 6.5 Grendel or .22 Nosler. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . The M4 was the first (allegedy) carbine length gas system. If this is your first visit, be sure to M4 ramps help in feeding in for carbine in full auto. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. Press J to jump to the feed. 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. 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. instead of mil-spec. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. Ready to drop onto a complete lower receiver. So, an M4 feed ramp includes the barrel extension and the upper. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. My experience with ARs is all A-1s. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. 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. Does it make a big difference? You have a rifle barrel. Powered by Invision Community. I can assure you that most mods that deviate from the original design aren't 100% reliable. m4 feed ramps - The Armorer - AR15Armory.com Copyright 2016 - 2023 by AdventureFootstep.com. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . And that is the important thing! Adding feedramps - M4Carbine.net 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. We want you, our readers, to be able to make informed decisions. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. My alternative plan is to do exactly as you describe. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. AR Tech Tip - Checking M4 Ramps for overhang - YouTube Seems M4 is all the rage these days. Gun smith said , not head spaced properly. AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle LanceRiley, The extension is the part at the end of the barrel that fits inside the upper. Given that most of us dont always have perfect access to truly genuine Mil-Spec, mil-standard parts (those actually used in issued fighting tools), were shopping based on a little part trust and a bigger part knowledge. For a better experience, please enable JavaScript in your browser before proceeding. He had more to say and added some more engineer and gun designer speak too. Don't forget read more information about it here! Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Please be respectful of others. M4-style barrel extension with Rifle-type upper - Rifle - Technical from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. You can post now and register later. All we do is dremmel it to match - we dont remove it and grind to any specific angle. In most cases the ramps only help during full auto mode while cycling at a high rate. You are using an out of date browser. How to Polish a Feedramp Quick and Easy | Firearms Talk 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. #2. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA Use this M4 Barrel extention with M4 feedramps. AR-15 Feed Ramp Problems - School of the American Rifle Insert the barrel and sharpie the cut area, then use the right bit on a dremel. Can someone recommend or point me in the right direction of a good quality upper receiver for an SPR build that does not have M4 feed ramp cuts in it? I can probably get the upper reciever first. 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. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. Issues can arise when receivers and barrel extensions are mismatched. Thank you for answering the question do well. I've seen that pic, it is a good reference. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. By my estimates, the tip of the bullet first hits the barrel extension about 1/3 of the way up the respective feed ramp on the barrel extension. Remember less is more, little by little. Get The Best Trigger Pull Gauges To Make Every Shot Count. By So there's a lot more going on with rounds bouncing up and down in the mags etc. Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log Its not a big deal but still an important thing to remember and understand. And it appears that the bolt is slamming into the top of the bullet. I'll probably build a pistol out of this one. I have looked and looked and looked. Full M4 feed ramps are on both the upper and barrel extension. It is removeable with a special wrench and a barrel clamp/vise. Modify AR15 A2 barrel extension for M4 feed ramp? 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. Went back to the sellers website and found I was not the only one with problems. However, they do have M4 feed-ramps which is not clone correct. Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. Change the angle so that the ramp ends at the exact same point. Factory said its fine . They are better! Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. Copyright 1996-2023 AR15.COM LLC. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. Anodized red parts. 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. I had seen these pix years ago and dismissed the idea of mix and match. A feed ramp is a basic feature of many breech loading cartridge firearm designs.