I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. 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. M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. Then you can get a regular rifle barrel for the upper with no ramps. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . So, what is the difference between M4 feed ramps and regular ones? Remember less is more, little by little. $101.95. First of Im not a gunsmith or firearms professional. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. 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. 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. Either way is good and both types work great with semi auto only guns. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. Shorter length equates to much higher pressure in the upper receiver. The extension is the part at the end of the barrel that fits inside the upper. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. April 23, 2014 in Rifle - Technical. Copyright 1996-2023 AR15.COM LLC. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. Just because you can, doesn't mean you should. 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. Feed ramps on barrel extensions are a good example. For a better experience, please enable JavaScript in your browser before proceeding. Cutting M4 feed ramps - Calguns.net 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. Barrel FAQs | Ballistic Advantage The information provided here does not represent the views of Cheaper Than Dirt! Making a non M4 feed ramp barrel work in an M4 feed ramp upper. I prefer them. They guide the bullet up and into the chamber. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. Clear editor. As they are becoming more and more a standard, and certainly do not do any harm to us. 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. The rifle-platform M16s dont use them. Add 3% to the total cost for credit card purchases. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. 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. I'm assuming that you only need the ramps from one or the other. 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 Here you can see an upper with "rifle" feedramps. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. The barrel Throat is the second most critical component after angles and should be polished with utmost care. How to Clone the M16A2 Rifle - The New Rifleman The Fora platform includes forum software by XenForo. Copyright 1996-2023 AR15.COM LLC. M4 feed ramp barrel in a non M4 ramp upper - AR15.COM Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Avoid Polishing Too Lightly Or Too Roughly Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log 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. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. All Rights Reserved. Forged 7075-T6 aluminum is harder than a bulls balls. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE Konza Defender M-LOK 5.56 16" Rifle 1x7 FEATURES: 16" 4150 Nitride 1x7 5.56 Barrel T-Marked Upper with M4 Feed Ramps Steel Micro Gas Block, and Carbine Length Gas Tube 15" 7075 T6 Aluminum Free Float M-LOK Hand Guard A2 Muzzle Break BCG is an M16 Style Nitride QPQ Finish Charging Handle Mil-Spec 6 Position Mil-Spec Diameter Stock AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. It's an interesting question. AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 What's the difference? AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just Thank you for answering the question do well. This 20" BCM barrel is machined from SS410 stainless steel. You also repeated yourself. FN AR-15 5.56X45mm Nato . However, if youre wanting to rebarrel a non-M4-cut upper with an M4 feed-ramp equipped barrel, or going the other direction: you have a new upper thats been relieved to fit with the M4 ramps, and a non-M4-cut barrel extension, and that wont work! For use by barrel manufacturers. 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. aaargh.. that's the setup I hate to see. Amazing what happens in a thread over a simple question. Read Now. 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. Only took a few minutes. The ramps are in the barrel extension. AR-15 Feed Ramp Problems - School of the American Rifle And it appears that the bolt is slamming into the top of the bullet. Press J to jump to the feed. Metal cases ammunition such as Wolf through an M4 clone? All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. 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. FN AR-15 5.56 NATO 20" Hammer Forged Barrel - Black All uppers are assembled cleaned and tested before shipping. So I'm working on my first build, and I'm a little confused. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. 2. The first reason is that they are, indeed, better. 2. Reddit and its partners use cookies and similar technologies to provide you with a better experience. 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). One new winner* is announced every week! Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. Thanks! Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. By Yamil Sued August 6, 2021. Gun smith said , not head spaced properly. Its not a big deal but still an important thing to remember and understand. He had more to say and added some more engineer and gun designer speak too. If you consider this article useful, share it with anyone in need! Thanks for explaining the feed ramp topic in a couple of different ways. "It will last 5k rounds instead of 4k. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. 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? You have the option of barrel type, thread, fluting, finish type and to add a match bolt. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Previous. 6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas and add them to non-m4 barrels.? I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? 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. 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. colt A1E1 733 uppers didn't have extended carbine feedramps ? 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. 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. You wrote that much to make a point that should have taken about 100 words? I'm a machinist in the aerospace industry and lucky enough to have unrestricted access to a really nice machine shop so the modification from rifle to M4 feed ramps is no sweat, I've done it once before a few years back with a .250" carbide cutter in the mill for a friend and it came out looking indistinguishable from a true M4 extension. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? CARBON-15 Stripped Lower Receiver Adding M4 feedramps to A1/C7 upper - M4Carbine.net Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd Good call. In case My barrel is rifle ramp it won't be so bad after all. Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here Share your latest AR build or photos from the range with #RangeDayFriday for a chance to win a new firearm! Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. Experts advise on 31 degrees+30 minus-zip. 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. Which Model Colt 1911 is For Me? Home Firearms Figuring Out Feed Ramps. 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? Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. I can assure you that most mods that deviate from the original design aren't 100% reliable. However Ive built numerous ar15 and lr308 rifles and pistols. 50 bucks one way or the other on the barrel ain't squat! 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-. 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. M4 Feed ramps on barrel extensions are a solid example. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas All NFA rules apply. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. So, an M4 feed ramp includes the barrel extension and the upper. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull I got my help from this thread, and thank you again to ORD. There is a picture of the various options, hopefully another poster can link them. Thread: Adding M4 feedramps to A1/C7 upper. They were not intended to be super long range man killers. Go slow and you'll be done in no time. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! You cannot paste images directly. My experience with ARs is all A-1s. 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. Proper maintenance and lubrication. Not all mil-spec features advertised on the product information are the real mil-specs. Any body need a anchor for a very small boat? Go back to writing school. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. Standard vs M4 Feed Ramps, what's the difference #1056 The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. which is basicallly an m16a1 cut down. 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. DSA has fat top, Mueller, non feed ramp uppers for $40. Dec 17, 2020. The best case is to have both an upper and barrel that have the feed ramps. Full M4 feed ramps are on both the upper and barrel extension. 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. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. A forum community dedicated to drag racing drivers and enthusiasts. 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 should have taken my own advice for once. 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. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! which is bad combo. 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. Description. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M So, lets glide down these lines below to erase your misconceptions about them. Modern Series Barrels. Sent back again. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. I too built a .458 SOCOM carbine . Press J to jump to the feed. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop.