Press J to jump to the feed. Which Model Colt 1911 is For Me? So, I had purchased a 458 upper. Earlfillmore 13 hr. AR-15 Barrel Extension Question - Sniper's Hide Forum 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. Lol. Use this M4 Barrel extention with M4 feedramps. Some argue that, factually, its a step to enable a smoother feeding. are all barrels w/ m4 feed ramps?? can you buy feed ramps individually? I think your mistaking that with adding ramps to the receiver. You will be able to leave a comment after signing in, AR15Armory.com I have a non ramped barrel in a ramped upper, feeds fine. I've seen that pic, it is a good reference. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. LanceRiley, Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. In most cases the ramps only help during full auto mode while cycling at a high rate. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. 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. Guess what? For use by barrel manufacturers. The first reason is that they are, indeed, better. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. It was in the last few issues of SAR. For a better experience, please enable JavaScript in your browser before proceeding. Shorter length equates to much higher pressure in the upper receiver. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. You cannot paste images directly. JavaScript is disabled. If a barrel comes with the feed ramps could I take them off? It is milled out of 6061 T6. If you don't clean it but demand 3/4MOA you might get 1,500. Thats true overall and good to keep in mind. Its also recommended you polish the ramps once youve achieved the appropriate angle. The photo shows the dents and the bolt lugs line up perfectly. No feed ramps. 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). i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. Feeds flawlessly. So, an M4 feed ramp includes the barrel extension and the upper. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. 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. Seems M4 is all the rage these days. 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. I just need a little guidance on this and I'm having trouble getting good results from Google. Remember less is more, little by little. I read in Bravo company that there are 2 kinds of flat top upper. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. Adding feedramps - M4Carbine.net If this is your first visit, be sure to Does it make a big difference? M4 can better explain their benefit, although they help with more reliable feeding. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Using an upper with M4 feed ramps with a barrel that does not have them will lead to feed problems as it creates a ledge/lip that can catch the bullet tip as it tries to feed. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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.) . You are using an out of date browser. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. 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 use it for hunting dogs only. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. You need to match up barrels to receivers for optimum performance. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. Caught a deal on a matched barrel and bolt. I notice that's a Gibbz (or Gibbz-type) upper. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull if you are OK with 3MOA, you might go 20,000 rounds! April 23, 2014 in Rifle - Technical. Married pretty well with my Seekins machined lower. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Gas block area is .750 diameter. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. 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. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist $101.95. Press question mark to learn the rest of the keyboard shortcuts. The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 Editors Note: This article was originally published in January of 2019. check out the. Issues can arise when receivers and barrel extensions are mismatched. For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. 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 can probably get the upper reciever first. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. So, what youre saying is that an M16 upper (not M4 cut) will work with either barrel, but an M4 cut upper will only work with an M4 cut barrel. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. 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. Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. I got my help from this thread, and thank you again to ORD. Semi autos run slower than full autos. When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. Not all mil-spec features advertised on the product information are the real mil-specs. Both. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. 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). That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. *Must have a registered ARFCOM account to win. "C" stamp and CAGE code available. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. 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. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo.