The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. 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.) . Feeds flawlessly. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. 's blog. For a better experience, please enable JavaScript in your browser before proceeding. Full M4 feed ramps start on the upper and continue onto the barrel extension. Thanks. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. Your previous content has been restored. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. Good call. Any body need a anchor for a very small boat? . 1 is a standard and the other for use with m4 feed ramp barrels. 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. Clear editor. All Rights Reserved. No feed ramps. Experts advise on 31 degrees+30 minus-zip. 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. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. Cutting M4 feed ramps - Calguns.net Just because you can, doesn't mean you should. It was in the last few issues of SAR. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. Only took a few minutes. You need to match up barrels to receivers for optimum performance. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. 3. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. So, what is the difference between M4 feed ramps and regular ones? Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Press J to jump to the feed. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. Forged 7075-T6 aluminum is harder than a bulls balls. Interesting reading. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? Get The Best Trigger Pull Gauges To Make Every Shot Count. Editors Note: This article was originally published in January of 2019. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. And that is the important thing! Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. For new construction barrels only. 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. The barrels also had to be modified. 30 cal. 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. No Feed Ramps on upper? - General Discussion - 308AR.com Community Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. No need to alter the upper. In case My barrel is rifle ramp it won't be so bad after all. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. First of Im not a gunsmith or firearms professional. 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? I just need a little guidance on this and I'm having trouble getting good results from Google. 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. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. All uppers are assembled cleaned and tested before shipping. They guide the bullet up and into the chamber. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! If this is your first visit, be sure to I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . You are using an out of date browser. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. 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). Looking For Bear Creek Arsenal Barrels Review? Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals I didnt think anything about it having M4 feed ramps. Brevity matters. So like ORD says it is entirely 100% possible and plenty of people do it, but I would rather not do any work to this perfect barrel. Add 3% to the total cost for credit card purchases. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. One new winner* is announced every week! I will check with compass lake. Shorter length equates to much higher pressure in the upper receiver. Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum Somwhere in the 1990s I believe, Colt designed the M4 feed ramps, where they took some of the material out of the upper receiver, cut two little ramps in it and then cut the ramps in the barrel extention a little further forward. are all barrels w/ m4 feed ramps?? The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. 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. If it's happening regularly, check the magazines you are using for serviceability. Should not be too hard. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. which is bad combo. what does it do?? Ideally both. What's the difference? AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle Change the angle so that the ramp ends at the exact same point. Factory said its fine . The last is using the best and right ammo for the job. The mil actually only specs M4 feed ramps for use in its M4s. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. Your email address will not be published. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. What is the difference between Modern, Performance, and Premium Series Barrels? 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. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. "It will last 5k rounds instead of 4k. Adding M4 feedramps to A1/C7 upper - M4Carbine.net ago KrinkyDink2 9 hr. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. Its not a big deal but still an important thing to remember and understand. I have a non ramped barrel in a ramped upper, feeds fine. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Sent back again. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. I too built a .458 SOCOM carbine . But, as with anything else, this work can go too far. M4 barrel to non M4 receiver is fine, but not the other way around. Proper maintenance and lubrication. Feed ramps on barrel extensions are a good example. You CAN modify a rifle/A2 barrel extension to an M4 style extension, but it isn't always the best way to go unless you just have to do it. check out the. 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 I prefer them. m4 feed ramps - The Armorer - AR15Armory.com 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. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. Notify me of follow-up comments by email. What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist "C" stamp and CAGE code available. 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. upper recievers and barrels are hard to comeby. AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums Getting the AR Barrel and Receiver Configuration Correct M4 feed ramps are not an original design, they were designed for the M4 In fact, the . 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. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. I built the upper using a Mega upper with a Compass Lake 18" barrel. Barrel customizations are also available. I'll probably build a pistol out of this one. $101.95. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. Caught a deal on a matched barrel and bolt. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. Previous. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. Adding feedramps - M4Carbine.net So, lets glide down these lines below to erase your misconceptions about them. 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 That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. M4 feed ramps. However, they do have M4 feed-ramps which is not clone correct. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. Is one better than the other? A closer look at uppers and barrel extensions. Its also recommended you polish the ramps once youve achieved the appropriate angle. Single Action and Double Action Which One Is Better For You? I'm assuming that you only need the ramps from one or the other. Which Model Colt 1911 is For Me? By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. Avoid Polishing Too Lightly Or Too Roughly Press J to jump to the feed. FFL Fax: 866-721-8691. Went back to the sellers website and found I was not the only one with problems. I have looked and looked and looked. They are better! AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 You cannot paste images directly. Go slow and you'll be done in no time. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. 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. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. If you don't clean it but demand 3/4MOA you might get 1,500. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. I like all my guns to be reliable. 5. As suggested, its best to match the upper and barrel extension no worries that way. Bullets tend to bump, snag, and stub on these guns. Thanks for explaining the feed ramp topic in a couple of different ways. This is a big tip, by the way, for pistol-caliber ARs. Required fields are marked *. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. 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. 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. I think my question would be why rifle receiver+M4 barrel is just "ok" rather than "good", unless the point is that in a carbine-gas gun M4 ramps are just considered an improvement over no ramps. I think your mistaking that with adding ramps to the receiver. 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! M4 feed ramps will extend the barrel extension and the upper receiver. I don't quite trust myself to give it a go, but if that's all there is to it I'm hoping they can do it for a reasonable price. Either way is good and both types work great with semi auto only guns. If you have an account, sign in now to post with your account. So, an M4 feed ramp includes the barrel extension and the upper. 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. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull It is milled out of 6061 T6. Some argue that, factually, its a step to enable a smoother feeding. Both. As they are becoming more and more a standard, and certainly do not do any harm to us. FN AR-15 5.56X45mm Nato . CUTTING M4 RAMPS - YouTube He had more to say and added some more engineer and gun designer speak too. Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms 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. 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. 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. It may not display this or other websites correctly. Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. 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. So the engineers lowered the feed rampa into the receiver. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. Here you can see an upper with "rifle" feedramps. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. . Try this little exercise: 1. Rifle vs m4 feed ramps - AR15.COM If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. By M16's fed pretty well before the M4 feed ramps were introduced. The ramps are in the barrel extension. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. I'm a machinist in the aerospace industry and lucky enough to have unrestricted access to a really nice machine shop so the modification from rifle to M4 feed ramps is no sweat, I've done it once before a few years back with a .250" carbide cutter in the mill for a friend and it came out looking indistinguishable from a true M4 extension. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. I wouldn't be concerned at all with any wear after modifying an upper receiver. FN AR-15 5.56 NATO 20" Hammer Forged Barrel - Black 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. If you have a m4 ramped upper but not barrel you can cause problems as there's a lip of steel barrel extension in the way that can cause feeding problems. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Sorta. I like getting another Upper idea then you could end up with two rifles! The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. You will be able to leave a comment after signing in, AR15Armory.com The rifle-platform M16s dont use them. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. M4 Feed ramps on barrel extensions are a solid example. True, which is why they're not even needed in semi autos. You absolutely do not want it the other way around however. M4 feed ramp barrel in a non M4 ramp upper - AR15.COM This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. Use this M4 Barrel extention with M4 feedramps. You must log in or register to reply here. Damaged Ak front end Barrel in Trunnion with or without sight bases. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. When you need to nail something you use a hammer not a wrench. 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. 2. 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? In short, if you have a Dremmel you can do it yourself. They . In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Just put it in and shoot it. Reliability is the main concern for me when I re-barrel this rifle. The barrel is supposed to have the M4 feed ramps. The extension is the part at the end of the barrel that fits inside the upper. 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. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. aaargh.. that's the setup I hate to see. 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. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. is the m4 feedramp common in barrel extensions? All comments are held for moderation and will appear after approval. I suggest you get a rifle receiver. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). 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. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. Theres a bit more to it than just polishing. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! 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. 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. Does NOT include pin can you buy feed ramps individually? You need to match up barrels to receivers for optimum performance. This has been my concern with modifying the aluminum parts. 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? All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine.
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