3. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. Pasted as rich text. what does it do?? These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. Barrel Length: 16" Barrel Material: 4150V Chrome Moly Vanadium Steel Barrel Finish: Phosphate Barrel Profile: M4 Chamber: 5.56 NATO Twist Rate: 1 in 7" Extension: M4 Gas System: Carbine-Length Gas Block Type: Low Profile .750" Diameter Upper Receiver: Forged 7075 T6 Aluminum Receiver Style: M4 Flat top with feed ramps Receiver Finish: Hardcoat Anodized Whether they materialize or not depends on the direction of the mismatch. So I'm working on my first build, and I'm a little confused. You are using an out of date browser. No need to alter the upper. CARBON-15 Stripped Lower Receiver So, I had purchased a 458 upper. Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd For a better experience, please enable JavaScript in your browser before proceeding. which is basicallly an m16a1 cut down. M4 Feedramps - AR-15 Pro You will be able to leave a comment after signing in, AR15Armory.com 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. Cutting M4 feed ramps - Calguns.net 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. M4 feed ramps will extend the barrel extension and the upper receiver. Interesting reading. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. 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? Married pretty well with my Seekins machined lower. Press J to jump to the feed. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. The ramps are in the barrel extension. I notice that's a Gibbz (or Gibbz-type) upper. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? So I called. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. Both. 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. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. aaargh.. that's the setup I hate to see. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? It's best to use rifle/rifle combo or M4/M4. - 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. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. It gives a longer ramp that is less steep into the chamber. I too built a .458 SOCOM carbine . The first reason is that they are, indeed, better. Adding feedramps - M4Carbine.net I picked up a side charging upper from Sundevil last year. I've seen that pic, it is a good reference. Mil-spec is good for the masses, and if you want the job done it is a great start. 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. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. You want them to match. What is the difference between Modern, Performance, and Premium Series Barrels? Sent back again. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. Any body need a anchor for a very small boat? I'll probably build a pistol out of this one. The tip of the cartridge rarely comes into contact with the upper receiver. These units actually feature the NON-F-Marked (correct) front sight base. Would not feed to save its life! 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. Feed Ramps -300BlkTalk From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Any use of this content without express written consent is prohibited. I found the article very informative. 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. 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. 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. M16's fed pretty well before the M4 feed ramps were introduced. [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 You need to match up barrels to receivers for optimum performance. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. I have looked and looked and looked. Modern Series Barrels. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. For a better experience, please enable JavaScript in your browser before proceeding. 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. Guess what? By Yamil Sued August 6, 2021. It is removeable with a special wrench and a barrel clamp/vise. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. 50 bucks one way or the other on the barrel ain't squat! And it appears that the bolt is slamming into the top of the bullet. Some suggest taking a grinder to the extension area. 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 can post now and register later. The M4 was the first (allegedy) carbine length gas system. Gun smith said , not head spaced properly. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Which Model Colt 1911 is For Me? M4 can better explain their benefit, although they help with more reliable feeding. Forged 7075-T6 aluminum is harder than a bulls balls. There is a picture of the various options, hopefully another poster can link them. How to Polish a Feedramp Quick and Easy | Firearms Talk But, as with anything else, this work can go too far. All comments are held for moderation and will appear after approval. Barrel customizations are also available. In short, if you have a Dremmel you can do it yourself. 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 Anodized red parts. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. I use it for hunting dogs only. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. If this is your first visit, be sure to Jams and misfires. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). Most work performed while-you-wait, evening and saturday appointments available. check out the. I checked what I have now. 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. Questions on how to install your new BA barrel? The barrel extension and the receiver both have to have the cuts. They . I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. The M-16/M4 are great weapons. We have four combinations here: I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Earlfillmore 13 hr. 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 difference between standard feed ramps and M4 ramps is easy to see. Factory said its fine . The rifle-platform M16s dont use them. Either way is good and both types work great with semi auto only guns. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. You cannot paste images directly. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. Your previous content has been restored. . I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. Site towers are not "F" marked SPECS: Length- 14.5". 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. I'm assuming that you only need the ramps from one or the other. You have a rifle barrel. You wrote that much to make a point that should have taken about 100 words? You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. I read in Bravo company that there are 2 kinds of flat top upper. AR9 - Help diagnosing feeding issue. Is it worth the extra 50 bucks?" 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. 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. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. Semi autos run slower than full autos. Clear editor. 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 Experts advise on 31 degrees+30 minus-zip. By Finding the proper upper receiver is your best option. Your email address will not be published. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. 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. One new winner* is announced every week! Upload or insert images from URL. #2. Try this little exercise: 1. if you are OK with 3MOA, you might go 20,000 rounds! Good call. You can modify the upper, but bear in mind that the un-anodized aluminum surface will be very soft and prone to wear if your particular bullet hits it frequently. Its not a big deal but still an important thing to remember and understand. The best case is to have both an upper and barrel that have the feed ramps. 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. You absolutely do not want it the other way around however. 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. I just need a little guidance on this and I'm having trouble getting good results from Google. The barrels also had to be modified. AR-15 Barrel Extension Question - Sniper's Hide Forum Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). 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. You also repeated yourself. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. Thats why AR10s- And Scar heavies exist for. Press J to jump to the feed. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull 308 m5 using m4 feed ramps, which I belive are for the smaller round like. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. 3. JavaScript is disabled. And that is the important thing! 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. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. If you consider this article useful, share it with anyone in need! Only took a few minutes. 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 . Get The Best Trigger Pull Gauges To Make Every Shot Count. ago KrinkyDink2 9 hr. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . I didnt think anything about it having M4 feed ramps. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. 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. If a barrel comes with the feed ramps could I take them off? can the barrel extension be bought individualy? i have the rifle barrel. Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log 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? Its a miracle! Then you can get a regular rifle barrel for the upper with no ramps. Shorter length equates to much higher pressure in the upper receiver. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. Some argue that, factually, its a step to enable a smoother feeding. A4 Complete Upper Receiver. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. 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. Add 3% to the total cost for credit card purchases. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Edited April 27, 2014 by Mark Gale M4 feed ramps are not an original design, they were designed for the M4 In fact, the . 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. Barrel FAQs | Ballistic Advantage One new winner* is announced every week! Copyright 2016 - 2023 by AdventureFootstep.com. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. EDIT: Okay, I understand now! "A Bad Day At The Range Is Better Than A Great Day Working". The extension is the part at the end of the barrel that fits inside the upper. In most cases the ramps only help during full auto mode while cycling at a high rate. Feeds flawlessly. Go back to writing school. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. Looking For Bear Creek Arsenal Barrels Review? M4 Feed ramps on barrel extensions are a solid example. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. It's an interesting question. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! May 17, 2008 in The Armorer. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. M4-style barrel extension with Rifle-type upper - Rifle - Technical Dec 17, 2020. 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). 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. is the m4 feedramp common in barrel extensions? So, an M4 feed ramp includes the barrel extension and the upper. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. First of Im not a gunsmith or firearms professional. 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. Remember less is more, little by little. Notice how the ramp starts on the barrel extension and not in the receiver. 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? Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. 4. Home Firearms Figuring Out Feed Ramps. Standard vs M4 Feed Ramps, what's the difference #1056 AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Is getting it as part of the upper better? Single Action and Double Action Which One Is Better For You? The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. The upper I want to rebarrel is modified for Service Rifle competition so it's not quite as cheap as buying another $89 upper from Aero. Modify AR15 A2 barrel extension for M4 feed ramp? I built the upper using a Mega upper with a Compass Lake 18" barrel. If you have an account, sign in now to post with your account. 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. M4 ramps help in feeding in for carbine in full auto. Go slow and you'll be done in no time. I have a non ramped barrel in a ramped upper, feeds fine. Required fields are marked *. which is bad combo. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . 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. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. are all barrels w/ m4 feed ramps?? Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. Caught a deal on a matched barrel and bolt. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. It was in the last few issues of SAR. again, Thanks. 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. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. 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. The manufacturer said they had sold hundreds of barrels with out problems reported. The barrel Throat is the second most critical component after angles and should be polished with utmost care. A closer look at uppers and barrel extensions. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine.