adding m4 feed ramps to barrel

I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. JavaScript is disabled. I wouldn't be concerned at all with any wear after modifying an upper receiver. Thanks for explaining the feed ramp topic in a couple of different ways. Editors Note: This article was originally published in January of 2019. 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). No feed ramps. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. 30 cal. 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. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. 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'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. I can still use the combination. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. 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. 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. 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. 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. The M-16/M4 are great weapons. again, Thanks. Some argue that, factually, its a step to enable a smoother feeding. Watch a video about our Modern Series AR barrel: #2. My alternative plan is to do exactly as you describe. Factory said its fine . M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. April 23, 2014 in Rifle - Technical. Do you have an AR barrel or feed ramp tip? The ramps on the regular rifle-type extension are cut just to the edge of the extension. FFL Fax: 866-721-8691. M16's fed pretty well before the M4 feed ramps were introduced. You cannot paste images directly. Copyright 1996-2023 AR15.COM LLC. Barrel customizations are also available. This can lead to a rare but odd situation; barrel and receiver mismatch. It's best to use rifle/rifle combo or M4/M4. I prefer them. Press J to jump to the feed. It's best to have M4 ramps on both the upper and barrel. Pasted as rich text. Caught a deal on a matched barrel and bolt. So the engineers lowered the feed rampa into the receiver. Barrel, sight and trigger work on most pistols and shotguns. You have a rifle barrel. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. Powered by Invision Community. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Some suggest taking a grinder to the extension area. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Use this M4 Barrel extention with M4 feedramps. Any use of this content without express written consent is prohibited. 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. if you are OK with 3MOA, you might go 20,000 rounds! JavaScript is disabled. . They are better! Change the angle so that the ramp ends at the exact same point. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. 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 will check with compass lake. 2. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) The photo shows the dents and the bolt lugs line up perfectly. True, which is why they're not even needed in semi autos. 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 For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. What's the difference? Remember less is more, little by little. Just put it in and shoot it. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. 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. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. In case My barrel is rifle ramp it won't be so bad after all. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. M4A1s run at 950 rounds per minute in full auto and even 950+ rounds per minute as the gas port erodes open bigger and bigger with wear and allows them to run even faster and much more violent. M4 feed ramps will extend the barrel extension and the upper receiver. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. are all barrels w/ m4 feed ramps?? I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. The tip of the cartridge rarely comes into contact with the upper receiver. ago KrinkyDink2 9 hr. . 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? /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. 3. Add 3% to the total cost for credit card purchases. The Mission of Cheaper Than Dirt! The Fora platform includes forum software by XenForo. 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. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. As they are becoming more and more a standard, and certainly do not do any harm to us. Feeds flawlessly. 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. This has been my concern with modifying the aluminum parts. what does it do?? Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. Bullets tend to bump, snag, and stub on these guns. 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. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. 's blog. I can probably get the upper reciever first. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? I am glad to know that I need to look for changes in design and the differences in the A2 and A4 feed ramp / rails. Does anyone have a follow up that confirms or denies my claim? aaargh.. that's the setup I hate to see. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Press J to jump to the feed. No need to alter the upper. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. You can post now and register later. Man, its crazy how many of yall have absolutely no idea why you do what you do. Press question mark to learn the rest of the keyboard shortcuts. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. I checked what I have now. I cant advise on that one folks. The manufacturer said they had sold hundreds of barrels with out problems reported. He had more to say and added some more engineer and gun designer speak too. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? 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. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. Its also recommended you polish the ramps once youve achieved the appropriate angle. 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. Feels like a silly question now that it makes sense. Is it worth the extra 50 bucks?" For use by barrel manufacturers. 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. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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. Does NOT include pin I notice that's a Gibbz (or Gibbz-type) upper. Just because you can, doesn't mean you should. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps There's a 7 degree difference between standard and M4 ramps. 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). What is the difference between Modern, Performance, and Premium Series Barrels? M4 feed ramps are not an original design, they were designed for the M4 In fact, the . 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. What is an m4 feed ramp? The barrel blanks available are made from 416 Stainless Steel. Check often for fit. 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. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. The M4 was the first (allegedy) carbine length gas system. Then you can get a regular rifle barrel for the upper with no ramps. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. Only took a few minutes. You also repeated yourself. 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.

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