$101.95. Caught a deal on a matched barrel and bolt. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed 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. Thanks for explaining the feed ramp topic in a couple of different ways. 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. 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. You need to match up barrels to receivers for optimum performance. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. what does it do?? The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. 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. For a better experience, please enable JavaScript in your browser before proceeding. M4 barrel to non M4 receiver is fine, but not the other way around. 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 Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. You can always buy a non-m4 extension and have the new barrel retimed and headspaced, but it will probably cost more than a new upper receiver. You must log in or register to reply here. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. There's a 7 degree difference between standard and M4 ramps. Only took a few minutes. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. You can post now and register later. 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. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. 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). So, what is the difference between M4 feed ramps and regular ones? All Rights Reserved. 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. M4 ramps help in feeding in for carbine in full auto. Any body need a anchor for a very small boat? In most cases the ramps only help during full auto mode while cycling at a high rate. Featuring hand lapped 1/8 twist rate button rifling and M4 feed ramps barrel extensions, the 410 stainless barrel gives the shooter the best balance of weight and accuracy. 3. As they are becoming more and more a standard, and certainly do not do any harm to us. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. Its not a big deal but still an important thing to remember and understand. 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. Avoid Polishing Too Lightly Or Too Roughly 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. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Press J to jump to the feed. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. I prefer them. Site towers are not "F" marked SPECS: Length- 14.5". BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. JavaScript is disabled. Single Action and Double Action Which One Is Better For You? It's best to have M4 ramps on both the upper and barrel. Just put it in and shoot it. Guess what? Reddit and its partners use cookies and similar technologies to provide you with a better experience. from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. 1 is a standard and the other for use with m4 feed ramp barrels. - 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. aaargh.. that's the setup I hate to see. 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. which is bad combo. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 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. The tip of the cartridge rarely comes into contact with the upper receiver. 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). You cannot paste images directly. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. Editors Note: This article was originally published in January of 2019. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. If this is your first visit, be sure to Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Another reason is that any commercial receiver and parts makers want to tool up to make upper receivers and barrel extensions, especially when shorter guns are becoming more popular. Factory said its fine . Does NOT include pin The barrel Throat is the second most critical component after angles and should be polished with utmost care. Home Firearms Figuring Out Feed Ramps. Semi autos run slower than full autos. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. Watch a video about our Modern Series AR barrel: If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. Pasted as rich text. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. well.. it's kinda hard to get stuff in this part of the world. My experience with ARs is all A-1s. I guess it depends on what your relationship to the necessary shop activities is. "C" stamp and CAGE code available. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. Get The Best Trigger Pull Gauges To Make Every Shot Count. 3. The barrels also had to be modified. You will be able to leave a comment after signing in, AR15Armory.com Full M4 feed ramps start on the upper and continue onto the barrel extension. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. #2. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. Not all mil-spec features advertised on the product information are the real mil-specs. can the barrel extension be bought individualy? Damaged Ak front end Barrel in Trunnion with or without sight bases. Notify me of follow-up comments by email. Earlfillmore 13 hr. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. . Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). The barrel is supposed to have the M4 feed ramps. 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. For a better experience, please enable JavaScript in your browser before proceeding. You absolutely do not want it the other way around however. 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'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. 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. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? 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. I don't have much to add re: feed ramps, but. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. 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. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Interesting reading. 's blog. Would not feed to save its life! I will check with compass lake. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. All comments are held for moderation and will appear after approval. They were not intended to be super long range man killers. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. The Fora platform includes forum software by XenForo. . Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. The barrel blanks available are made from 416 Stainless Steel. 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 The best case is to have both an upper and barrel that have the feed ramps. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! Here you can see an upper with "rifle" feedramps. 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? 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? Both. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. A4 Complete Upper Receiver. One new winner* is announced every week! Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. 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. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. 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 Tech Tip - Checking M4 Ramps for overhang School of the American Rifle 84.8K subscribers Subscribe 2.9K 90K views 2 years ago AR Tech Tip - Checking M4 Ramps for overhang Show more Show more. Jams and misfires. If you consider this article useful, share it with anyone in need! again, Thanks. Some suggest taking a grinder to the extension area. This 20" BCM barrel is machined from SS410 stainless steel. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! No feed ramps. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. instead of mil-spec. is the m4 feedramp common in barrel extensions? All NFA rules apply. 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. I cant advise on that one folks. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. Your link has been automatically embedded. Description. Feed ramps being m4 or. By FFL Fax: 866-721-8691. The difference between standard feed ramps and M4 ramps is easy to see. Add 3% to the total cost for credit card purchases. Required fields are marked *. Modern Series Barrels. i have the rifle barrel. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. So there's a lot more going on with rounds bouncing up and down in the mags etc. April 23, 2014 in Rifle - Technical. The mil actually only specs M4 feed ramps for use in its M4s. Forged 7075-T6 aluminum is harder than a bulls balls. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. "A Bad Day At The Range Is Better Than A Great Day Working". From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. 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. hey bro nice to see you here!!! Most work performed while-you-wait, evening and saturday appointments available. Inadequate knowledge about these feed ramps can lead to lots of problems with barrels because they are essential parts to guide the bullet up and into the chamber. May 17, 2008 in The Armorer. They . AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. All Rights Reserved. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. 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. EDIT: Okay, I understand now! 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. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. 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. Feels like a silly question now that it makes sense. M16's fed pretty well before the M4 feed ramps were introduced. I read in Bravo company that there are 2 kinds of flat top upper. 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 can still use the combination. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. Paste as plain text instead, LanceRiley, If you have an account, sign in now to post with your account. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. By 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. The barrel extension and the receiver both have to have the cuts. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. There is a picture of the various options, hopefully another poster can link them. 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.
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