Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. 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. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. Seems M4 is all the rage these days. In most cases the ramps only help during full auto mode while cycling at a high rate. 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 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? For a better experience, please enable JavaScript in your browser before proceeding. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. M4 feed ramp barrel in a non M4 ramp upper - AR15.COM Required fields are marked *. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. 4. Jams and misfires. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Barrel FAQs | Ballistic Advantage DSA has fat top, Mueller, non feed ramp uppers for $40. Both. 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! Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. M4 feed ramps will extend the barrel extension and the upper receiver. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. i have the rifle barrel. It may not display this or other websites correctly. Rifle vs m4 feed ramps - AR15.COM this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. Mil-spec is good for the masses, and if you want the job done it is a great start. Press question mark to learn the rest of the keyboard shortcuts. My experience with ARs is all A-1s. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! Would not feed to save its life! FN AR-15 5.56X45mm Nato . 308 m5 using m4 feed ramps, which I belive are for the smaller round like. There is a picture of the various options, hopefully another poster can link them. 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). Does anyone have a follow up that confirms or denies my claim? 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-. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. A forum community dedicated to drag racing drivers and enthusiasts. 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. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Just because you can, doesn't mean you should. Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. 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. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA 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. 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. Man, its crazy how many of yall have absolutely no idea why you do what you do. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This has been my concern with modifying the aluminum parts. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces Caught a deal on a matched barrel and bolt. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. For a better experience, please enable JavaScript in your browser before proceeding. I have looked and looked and looked. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. You wrote that much to make a point that should have taken about 100 words? I guess it depends on what your relationship to the necessary shop activities is. The Mission of Cheaper Than Dirt! 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 want them to match. But, as with anything else, this work can go too far. Edited April 27, 2014 by Mark Gale DoubleStar M4 clone opinions | Survivalist Forum Just put it in and shoot it. Feed ramp - Wikipedia This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. Standard vs M4 Feed Ramps, what's the difference #1056 FFL Fax: 866-721-8691. We're a little past that point as I already own both the barrel and receiver, both of which cant easily be replaced or swapped for a decent price. Do you need an M4 feed ramp on your AR? Here is some info. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. . Press J to jump to the feed. Clear editor. Feed Ramps -300BlkTalk 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. are all barrels w/ m4 feed ramps?? 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? Interesting reading. Please be respectful of others. 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 . M4 ramps help in feeding in for carbine in full auto. Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist You cannot paste images directly. M4-style barrel extension with Rifle-type upper - Rifle - Technical 2. 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 A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. 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. This can lead to a rare but odd situation; barrel and receiver mismatch. Del-Ton, Inc. AR-15 16" M4 Custom Upper 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. What's the difference? Site towers are not "F" marked SPECS: Length- 14.5". Share it in the comments section. 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). The parts are interchangeable. 3. Ready to drop onto a complete lower receiver. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. Your link has been automatically embedded. 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. The barrel blanks available are made from 416 Stainless Steel. So there's a lot more going on with rounds bouncing up and down in the mags etc. Earlfillmore 13 hr. 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. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. A shorter gas tube means reduced gas pressure, and we all know what happens when there isn't enough pressure to cycle the bolt carrier group properly. Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms well.. it's kinda hard to get stuff in this part of the world. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. The ramps on the regular rifle-type extension are cut just to the edge of the extension. CARBON-15 Stripped Lower Receiver AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 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. Remember less is more, little by little. They . Does it make a big difference? The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/.