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The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. 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. M4-style barrel extension with Rifle-type upper - Rifle - Technical Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum I can probably get the upper reciever first. So there's a lot more going on with rounds bouncing up and down in the mags etc. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. We have four combinations here: M16's fed pretty well before the M4 feed ramps were introduced. 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. Press J to jump to the feed. "A Bad Day At The Range Is Better Than A Great Day Working". BCM 16" M4 Carbine Upper Receiver Group | BravoCompanyUSA FFL Fax: 866-721-8691. Interesting reading. Barrel customizations are also available. Is one better than the other? I didnt think anything about it having M4 feed ramps. If you don't clean it but demand 3/4MOA you might get 1,500. 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. -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! i have the rifle barrel. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. Barrel, sight and trigger work on most pistols and shotguns. M4 Feed ramps on barrel extensions are a solid example. One new winner* is announced every week! This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. He had more to say and added some more engineer and gun designer speak too. I like all my guns to be reliable. Brevity matters. . 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 checked what I have now. You are using an out of date browser. I don't have much to add re: feed ramps, but. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. And that is the important thing! However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. Your link has been automatically embedded. FN AR15 barrels are hammer forged using the same proprietary high-grade Chrome Moly Vanadium steel used in FN's venerable machinegun barrels produced to handle the punishment of . If you ever have an issue, then look at getting a correct barrel for the upper. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. So I called. 6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. You can post now and register later. The best case is to have both an upper and barrel that have the feed ramps. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. The parts are interchangeable. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. 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. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. The barrel blanks available are made from 416 Stainless Steel. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. Reddit and its partners use cookies and similar technologies to provide you with a better experience. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. April 23, 2014 in Rifle - Technical. For a better experience, please enable JavaScript in your browser before proceeding. 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. So, lets glide down these lines below to erase your misconceptions about them. In case My barrel is rifle ramp it won't be so bad after all. 5. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. I notice that's a Gibbz (or Gibbz-type) upper. Just put it in and shoot it. 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. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. I have looked and looked and looked. After two months of back and forth, cleaned up the feed ramps. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. 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. For use by barrel manufacturers. Standard vs M4 Feed Ramps, what's the difference #1056 Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums Create an account to follow your favorite communities and start taking part in conversations. 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. M4 feed ramps will extend the barrel extension and the upper receiver. I just need a little guidance on this and I'm having trouble getting good results from Google. Guess what? Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Shorter length equates to much higher pressure in the upper receiver. 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. Its not a big deal but still an important thing to remember and understand. Modify AR15 A2 barrel extension for M4 feed ramp? Your previous content has been restored. Just because you can, doesn't mean you should. 11.5", SBN, 1:7, 5.56 NATO Barrel Barrel FAQs | Ballistic Advantage The barrel extension and the receiver both have to have the cuts. Little polish. Full M4 feed ramps are on both the upper and barrel extension. The extension is the part at the end of the barrel that fits inside the upper. Bullets tend to bump, snag, and stub on these guns. Would not feed to save its life! . 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. Reliability is the main concern for me when I re-barrel this rifle. Thanks for explaining the feed ramp topic in a couple of different ways. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . However Ive built numerous ar15 and lr308 rifles and pistols. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Please be respectful of others. 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? 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. 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. if you are OK with 3MOA, you might go 20,000 rounds! A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. *Must have a registered ARFCOM account to win. 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. Do you need an M4 feed ramp on your AR? Here is some info. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? 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. JavaScript is disabled. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. 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). Finding the proper upper receiver is your best option. I have a non ramped barrel in a ramped upper, feeds fine. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Adding M4 feedramps to A1/C7 upper - M4Carbine.net So, an M4 feed ramp includes the barrel extension and the upper. 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 (theyre lowered). Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Moreover, telling someone that an extension can be modified, while not a lie, is nothing more than mental masturbation when your post contains a caveat for having the knowledge and proper tools. colt A1E1 733 uppers didn't have extended carbine feedramps ? Either way is good and both types work great with semi auto only guns. So I'm working on my first build, and I'm a little confused. AR9 - Help diagnosing feeding issue. are all barrels w/ m4 feed ramps?? 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. The best case is to have both an upper and barrel that have the feed ramps. Went back to the sellers website and found I was not the only one with problems. I guess it depends on what your relationship to the necessary shop activities is. 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. I will check with compass lake. Do you have an AR barrel or feed ramp tip? Then you can get a regular rifle barrel for the upper with no ramps. It is milled out of 6061 T6. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. well.. it's kinda hard to get stuff in this part of the world. Press J to jump to the feed. 3. The barrels also had to be modified. Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 It has 2 ramps cut into the receiver to help the rounds feed into the chamber. Press question mark to learn the rest of the keyboard shortcuts. I wouldn't be concerned at all with any wear after modifying an upper receiver. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. So, an M4 feed ramp includes the barrel extension and the upper. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. I think your mistaking that with adding ramps to the receiver. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. which is bad combo. Caught a deal on a matched barrel and bolt. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. M4 Feedramps - AR-15 Pro Dec 17, 2020. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Seems M4 is all the rage these days. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. 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. Notify me of follow-up comments by email. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. BrianEnos.com I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. Does anyone have a follow up that confirms or denies my claim? 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. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper 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. 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. Home Firearms Figuring Out Feed Ramps. Some argue that, factually, its a step to enable a smoother feeding. And it appears that the bolt is slamming into the top of the bullet. Feed ramps on barrel extensions are a good example. I found the article very informative. The tip of the cartridge rarely comes into contact with the upper receiver. 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. The mil actually only specs M4 feed ramps for use in its M4s. Good call. M4 Feed ramps on barrel extensions are a solid example. If a barrel comes with the feed ramps could I take them off? The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. While this gun is a more of novelty build than a "serious use" AR, I intend to use good parts and want it to run as well as my other ARs. I cant advise on that one folks. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Please allow 5~10 days for assembly and testing before ship date. 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.) . The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. 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. The first reason is that they are, indeed, better. So, I had purchased a 458 upper. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. 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 Both. 2. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. 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. My experience with ARs is all A-1s. When you need to nail something you use a hammer not a wrench. Is it worth the extra 50 bucks?" Most work performed while-you-wait, evening and saturday appointments available. I should have taken my own advice for once. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . Press question mark to learn the rest of the keyboard shortcuts. You will be able to leave a comment after signing in, AR15Armory.com No Feed Ramps on upper? - General Discussion - 308AR.com Community Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. I'm a machinist in the aerospace industry and lucky enough to have. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. I prefer them. 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). Ready to drop onto a complete lower receiver. Rifle vs m4 feed ramps - AR15.COM P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull Amazing what happens in a thread over a simple question. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Gun smith said , not head spaced properly. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. 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. One new winner* is announced every week! PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. What is the difference between Modern, Performance, and Premium Series Barrels? M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces I read in Bravo company that there are 2 kinds of flat top upper. and add them to non-m4 barrels.? AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. All Rights Reserved. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. Pasted as rich text. As suggested, its best to match the upper and barrel extension no worries that way. Is getting it as part of the upper better? Polishing the edges of the chamber mouth to remove the edges of that chamfer will. 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. Which Model Colt 1911 is For Me? You have the option of barrel type, thread, fluting, finish type and to add a match bolt. Gas block area is .750 diameter. Get The Best Trigger Pull Gauges To Make Every Shot Count. Questions on how to install your new BA barrel? "C" stamp and CAGE code available. I like getting another Upper idea then you could end up with two rifles! Was sort of worried about how it would run with an 11.5" barrel and mismatched ramps, but it sounds like it should be good to go either way. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel?