Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. For new construction barrels only. Its not a big deal but still an important thing to remember and understand. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. Most work performed while-you-wait, evening and saturday appointments available. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. The barrels also had to be modified. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Would not feed to save its life! I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. In short, if you have a Dremmel you can do it yourself. Clear editor. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. They . AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 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. Modify AR15 A2 barrel extension for M4 feed ramp? Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. 2. 1 is a standard and the other for use with m4 feed ramp barrels. Thanks. check out the. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. Amazing what happens in a thread over a simple question. A4 Complete Upper Receiver. 2. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE Then the manufacturer discontinued the barrel. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. Do you have an AR barrel or feed ramp tip? 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. Is it worth the extra 50 bucks?" In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Thread: Adding M4 feedramps to A1/C7 upper. Any use of this content without express written consent is prohibited. I guess it depends on what your relationship to the necessary shop activities is. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. I don't quite trust myself to give it a go, but if that's all there is to it I'm hoping they can do it for a reasonable price. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. 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. 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.) . 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 Mil-spec is good for the masses, and if you want the job done it is a great start. By By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. aaargh.. that's the setup I hate to see. We want you, our readers, to be able to make informed decisions. Sent back again. You will be able to leave a comment after signing in, AR15Armory.com A forum community dedicated to drag racing drivers and enthusiasts. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. 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. A couple of times I ended up with the OK set up from the picture above. Full M4 feed ramps are on both the upper and barrel extension. I built the upper using a Mega upper with a Compass Lake 18" barrel. You need to match up barrels to receivers for optimum performance. Any use of this content without express written consent is prohibited. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. if you are OK with 3MOA, you might go 20,000 rounds! Damaged Ak front end Barrel in Trunnion with or without sight bases. Good call. Ideally both. Copyright 1996-2023 AR15.COM LLC. 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. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. 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. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. The information provided here does not represent the views of Cheaper Than Dirt! The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. 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. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. 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. 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). Share it in the comments section. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. No Feed Ramps on upper? - General Discussion - 308AR.com Community ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. again, Thanks. Only took a few minutes. 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. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? It's best to use rifle/rifle combo or M4/M4. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. 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 Differences Between an M4 and an AR15 - Music Raiser I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. 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). By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 's blog. 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. is the m4 feedramp common in barrel extensions? This can lead to a rare but odd situation; barrel and receiver mismatch. Add 3% to the total cost for credit card purchases. However, I have seen more than a few basement gunsmith hackjobs using a dremel, some Jack Daniels/liquid courage, and an unsteady hand that have made a total, unrepairable mess of the job. Does NOT include pin Costs about $40-50 to have the feed ramps reprofiled from what I can gather. M4 Feed ramps on barrel extensions are a solid example. I'll probably build a pistol out of this one. well.. it's kinda hard to get stuff in this part of the world. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. It's best to have M4 ramps on both the upper and barrel. Watch a video about our Modern Series AR barrel: Went back to the sellers website and found I was not the only one with problems. I like getting another Upper idea then you could end up with two rifles! CARBON-15 Stripped Lower Receiver Thats why AR10s- And Scar heavies exist for. We have four combinations here: 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 Its also recommended you polish the ramps once youve achieved the appropriate angle. So the engineers lowered the feed rampa into the receiver. . It is milled out of 6061 T6. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. I read in Bravo company that there are 2 kinds of flat top upper. 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. Any body need a anchor for a very small boat? When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. m4 feed ramps - The Armorer - AR15Armory.com 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? The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. 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. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. 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. I prefer them. Read Now. 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. Barrel, sight and trigger work on most pistols and shotguns. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. 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 . M16s and M16-A1s run at 750 rounds per minute in full auto. Also, barrel life is relative. 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. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. But, as with anything else, this work can go too far. They are better! hey bro nice to see you here!!! Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. 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. Previous. 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. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? I got my help from this thread, and thank you again to ORD. If this is your first visit, be sure to May 17, 2008 in The Armorer. 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. 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. Some suggest taking a grinder to the extension area. EDIT: Okay, I understand now! Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. and add them to non-m4 barrels.? The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. AR Tech Tip - Checking M4 Ramps for overhang - YouTube You absolutely do not want it the other way around however. instead of mil-spec. 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. What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. 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. M4 Feed ramps on barrel extensions are a solid example. I had seen these pix years ago and dismissed the idea of mix and match. It may not display this or other websites correctly. Does it make a big difference? The ramps are in the barrel extension. Thats true overall and good to keep in mind. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. Theres a bit more to it than just polishing. Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. 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. can you buy feed ramps individually? P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull Paste as plain text instead, Reddit and its partners use cookies and similar technologies to provide you with a better experience. can the barrel extension be bought individualy? 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. Feed ramps being m4 or. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) One new winner* is announced every week! First of Im not a gunsmith or firearms professional. This has been my concern with modifying the aluminum parts. The M-16/M4 are great weapons. Copyright 1996-2023 AR15.COM LLC. There's a 7 degree difference between standard and M4 ramps. 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. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. 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. So there's a lot more going on with rounds bouncing up and down in the mags etc. It's best to use rifle/rifle combo or M4/M4. You have the option of barrel type, thread, fluting, finish type and to add a match bolt.
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adding m4 feed ramps to barrel