No Feed Ramps on upper? - General Discussion - 308AR.com Community Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. Its a miracle! Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). I cant advise on that one folks. The barrel extension and the receiver both have to have the cuts. 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. The information provided here does not represent the views of Cheaper Than Dirt! No need to alter the upper. if you are OK with 3MOA, you might go 20,000 rounds! 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 don't have much to add re: feed ramps, but. 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. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. The best case is to have both an upper and barrel that have the feed ramps. #2. I wouldn't be concerned at all with any wear after modifying an upper receiver. Go back to writing school. 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. All Rights Reserved. Copyright 2016 - 2023 by AdventureFootstep.com. Is one better than the other? Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. However, an M4 barrel extension is dished more so the feed ramps could extend downward, and then an area within the upper is shaped to match. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. Copyright 1996-2023 AR15.COM LLC. Any use of this content without express written consent is prohibited. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. Should M4 feed ramps come with the barrel or upper? : r/ar15 - reddit Experts advise on 31 degrees+30 minus-zip. What's the difference? [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. 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. April 23, 2014 in Rifle - Technical. Your email address will not be published. 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. It is a tightly machined and polished piece of metal which guides a cartridge from the top of the magazine into the firing chamber of the barrel. 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. It may not display this or other websites correctly. I use it for hunting dogs only. . They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Press J to jump to the feed. 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. All comments are held for moderation and will appear after approval. The ramps are in the barrel extension. They . I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. You can run M4 cut barrels with rifle receivers, but not the other way around as it will create at catch that can hang up the bullets. 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). 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. Reliability is the main concern for me when I re-barrel this rifle. Factory said its fine . 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. 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. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. The photo shows the dents and the bolt lugs line up perfectly. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. 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). There are several, but Steve and the guys at ADCO in OH are one such option (they use the Dremel method, but they do it right as I have seen several first-hand examples of their work and its performance after the fact). Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? You want them to match. Guess what? However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. So I'm working on my first build, and I'm a little confused. Full M4 feed ramps start on the upper and continue onto the barrel extension. 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. Does it make a big difference? I suggest you get a rifle receiver. Your link has been automatically embedded. If you ever have an issue, then look at getting a correct barrel for the upper. M4 feed ramps. Do you have an AR barrel or feed ramp tip? Forged 7075-T6 aluminum is harder than a bulls balls. If you want precision, dont look to the mil-spec gun, look to the one that is popular in 3-gun competitions, at Thunder Ranch, etc. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas Only took a few minutes. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. I'm a machinist in the aerospace industry and lucky enough to have. which is bad combo. For use by barrel manufacturers. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. 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. 1 is a standard and the other for use with m4 feed ramp barrels. We want you, our readers, to be able to make informed decisions. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. Change the angle so that the ramp ends at the exact same point. There is a picture of the various options, hopefully another poster can link them. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Gas block area is .750 diameter. what does it do?? Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About M4 feed ramps will extend the barrel extension and the upper receiver. . I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. Share it in the comments section. Required fields are marked *. Mil-spec is good for the masses, and if you want the job done it is a great start. Paste as plain text instead, I had seen these pix years ago and dismissed the idea of mix and match. so im thinking I might as well just get the unramp upper. This 20" BCM barrel is machined from SS410 stainless steel. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. Ideally both. Damaged Ak front end Barrel in Trunnion with or without sight bases. So, lets glide down these lines below to erase your misconceptions about them. What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep The barrels also had to be modified. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. It's best to use rifle/rifle combo or M4/M4. M4 Barrel Extension (M4 Feedramps) $22.95 (4 reviews) SKU: Barrel-Extension-M4 Stock Status: Quantity: Add to Wish List Description For your AR15, M16, M4. pictures would help. Does NOT include pin DSA has fat top, Mueller, non feed ramp uppers for $40. well.. it's kinda hard to get stuff in this part of the world. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. colt A1E1 733 uppers didn't have extended carbine feedramps ? 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. Recommend using a gunsmith this route too if you are not comfortable. One new winner* is announced every week! Then the manufacturer discontinued the barrel. Powered by Invision Community. In case My barrel is rifle ramp it won't be so bad after all. If you have an account, sign in now to post with your account. Feeds flawlessly. My alternative plan is to do exactly as you describe. The mil actually only specs M4 feed ramps for use in its M4s. All NFA rules apply. Ready to drop onto a complete lower receiver. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. I like all my guns to be reliable. 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 can the barrel extension be bought individualy? Not all mil-spec features advertised on the product information are the real mil-specs. Clear editor. Its also recommended you polish the ramps once youve achieved the appropriate angle. 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. Site towers are not "F" marked SPECS: Length- 14.5". 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. In most cases the ramps only help during full auto mode while cycling at a high rate. I'm assuming that you only need the ramps from one or the other. Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA Thanks! 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells M4 barrel to non M4 receiver is fine, but not the other way around. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. M16s and M16-A1s run at 750 rounds per minute in full auto. is the m4 feedramp common in barrel extensions? Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Man, its crazy how many of yall have absolutely no idea why you do what you do. LanceRiley, All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. 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. DoubleStar M4 clone opinions | Survivalist Forum I can probably get the upper reciever first. But, as with anything else, this work can go too far. Barrel, sight and trigger work on most pistols and shotguns. Little polish. However Ive built numerous ar15 and lr308 rifles and pistols. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. M4 M-4 Feed Ramp Jam with 55 gr grain Bullets, Solution, Fix, AR15 AR-15 Stuck Cartridge iowaunemployment 21K views 10 years ago Comparing AR15 barrels -Faxon vs. Bear Creek arsenal-. You also repeated yourself. When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. 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? BEFORE YOU GO MODIFYING IT, check your headspace.I have a Gibbz upper in my junk drawer because the upper -- for some reason -- wouldn't allow a perfectly good bolt (as checked by Criterion) to headspace correctly on a Criterion barrel, with the bolt installed in the carrier. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an 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. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. The ramps on the regular rifle-type extension are cut just to the edge of the extension. Both. I notice that's a Gibbz (or Gibbz-type) upper. Standard vs M4 Feed Ramps, what's the difference #1056 Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Feed ramps being m4 or. check out the. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. Copyright 1996-2023 AR15.COM LLC. If I was concerned with precision, I would seek out parts from well-known gun makers and customizers Baer comes to mind, Hart barrels, etc etc. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. How to Clone the M16A2 Rifle - The New Rifleman 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. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. I just need a little guidance on this and I'm having trouble getting good results from Google. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. 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. By using the M4 feed ramps for your firearm, you could pick up an increased percentage of the rounds, and feeding reliability would be improved. 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. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. Does anyone have a follow up that confirms or denies my claim? This can lead to a rare but odd situation; barrel and receiver mismatch. 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. Most work performed while-you-wait, evening and saturday appointments available. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. 2. All Rights Reserved. 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. A couple of times I ended up with the OK set up from the picture above. I can assure you that most mods that deviate from the original design aren't 100% reliable. Press J to jump to the feed. The barrel Throat is the second most critical component after angles and should be polished with utmost care. Some, me included, have said that the M4 ramps are a help to some of the larger-diameter cartridges in use, such as 6.5 Grendel or .22 Nosler. Notice how the ramp starts on the barrel extension and not in the receiver. Use this M4 Barrel extention with M4 feedramps. 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. 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. It is removeable with a special wrench and a barrel clamp/vise. The Fora platform includes forum software by XenForo. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. 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 from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. Edited April 27, 2014 by Mark Gale Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. 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. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. I picked up a side charging upper from Sundevil last year. I got my help from this thread, and thank you again to ORD. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Looking For Bear Creek Arsenal Barrels Review? - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! 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. 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). On the other hand, I wouldn't consider them as a deal breaker, and they would not pass up a good deal with an upper only because it did not have them - the M4 feed ramps. - 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. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. Read Now. Del-Ton, Inc. AR-15 16" M4 Custom Upper Barrel FAQs | Ballistic Advantage