Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . If I can correct an issue before it's an issue that is preferred. 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 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. This 20" BCM barrel is machined from SS410 stainless steel. Thats true overall and good to keep in mind. There's a 7 degree difference between standard and M4 ramps. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. It's best to have M4 ramps on both the upper and barrel. 6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 If it was some flat top + 16" FSB barrel id just swap upper/barrel, but this is a little more challenging to do that with. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. 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. LanceRiley, 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.) . This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. For a better experience, please enable JavaScript in your browser before proceeding. Thank you for answering the question do well. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps Notify me of follow-up comments by email. 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. CARBON-15 Stripped Lower Receiver AR9 - Help diagnosing feeding issue. You cannot paste images directly. Don't forget read more information about it here! What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep EDIT: Okay, I understand now! is the m4 feedramp common in barrel extensions? M4 feed ramps are not an original design, they were designed for the M4 In fact, the . 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. Forged 7075-T6 aluminum is harder than a bulls balls. In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. 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-. I use it for hunting dogs only. I read in Bravo company that there are 2 kinds of flat top upper. We want you, our readers, to be able to make informed decisions. m4 feed ramps - The Armorer - AR15Armory.com Damaged Ak front end Barrel in Trunnion with or without sight bases. Went back to the sellers website and found I was not the only one with problems. Anodized red parts. 3. May 17, 2008 in The Armorer. The mil actually only specs M4 feed ramps for use in its M4s. The Differences Between an M4 and an AR15 - Music Raiser One new winner* is announced every week! I notice that's a Gibbz (or Gibbz-type) upper. . Thanks. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. Caught a deal on a matched barrel and bolt. 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 This is a big tip, by the way, for pistol-caliber ARs. again, Thanks. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. Notice how the ramp starts on the barrel extension and not in the receiver. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. Thats why AR10s- And Scar heavies exist for. It is milled out of 6061 T6. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. How to Polish a Feedramp Quick and Easy | Firearms Talk Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. There is a picture of the various options, hopefully another poster can link them. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC 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. 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. What is the difference between Modern, Performance, and Premium Series Barrels? It's near impossible to replace the carry handle upper I have these days, and finding a colt chrome lined 20" light weight barrel isn't a walk in the park either. 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. 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. 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. "It will last 5k rounds instead of 4k. If you ever have an issue, then look at getting a correct barrel for the upper. Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd 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 closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log 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. 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. I recently picked up a barrel that I thought had M4 feed ramps, but it doesn't line up with my M4 feed ramp upper. If you consider this article useful, share it with anyone in need! M16s and M16-A1s run at 750 rounds per minute in full auto. Guess what? Sorta. All uppers are assembled cleaned and tested before shipping. So, an M4 feed ramp includes the barrel extension and the upper. So, an M4 feed ramp includes the barrel extension and the upper. Thanks for explaining the feed ramp topic in a couple of different ways. Thanks! I'm a machinist in the aerospace industry and lucky enough to have. Little polish. A closer look at uppers and barrel extensions. Press question mark to learn the rest of the keyboard shortcuts. How to Clone the M16A2 Rifle - The New Rifleman M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just It's an interesting question. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. AR Tech Tip - Checking M4 Ramps for overhang School of the American Rifle 84.8K subscribers Subscribe 2.9K 90K views 2 years ago AR Tech Tip - Checking M4 Ramps for overhang Show more Show more. Experts advise on 31 degrees+30 minus-zip. which is bad combo. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. instead of mil-spec. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. The reason I decided to write about this topic at all was because there are some mil-spec features advertised on aftermarket parts that arent even really mil-spec. So I'm working on my first build, and I'm a little confused. 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. A forum community dedicated to drag racing drivers and enthusiasts. I can still use the combination. However Ive built numerous ar15 and lr308 rifles and pistols. 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. "C" stamp and CAGE code available. and add them to non-m4 barrels.? AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums FN AR-15 5.56X45mm Nato . I will check with compass lake. I have looked and looked and looked. 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? Full M4 feed ramps start on the upper and continue onto the barrel extension. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. I'm planning on replacing my forearm with a Larue 13.5. One new winner* is announced every week! The Fora platform includes forum software by XenForo. Earlfillmore 13 hr. A4 Complete Upper Receiver. A couple of times I ended up with the OK set up from the picture above. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. 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. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. 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 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. Copyright 2016 - 2023 by AdventureFootstep.com. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Adding M4 feedramps to A1/C7 upper - M4Carbine.net Good call. By I like getting another Upper idea then you could end up with two rifles! AR-15 Barrel Extension Question - Sniper's Hide Forum No need to alter the upper. Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals M4 feed ramp barrel in a non M4 ramp upper - AR15.COM aaargh.. that's the setup I hate to see. M4 feed ramps were created during the development of the xM4 carbine for the original Army requirement of a carbine rifle that used the then current M16A2 upper receiver, 14.5" Barrel and had featured a collapsible sliding stock. Mil-spec is good for the masses, and if you want the job done it is a great start. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Recommend using a gunsmith this route too if you are not comfortable. Most work performed while-you-wait, evening and saturday appointments available. Reliability is the main concern for me when I re-barrel this rifle. What's the difference? Paste as plain text instead, which is basicallly an m16a1 cut down. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. Feed Ramps -300BlkTalk So, lets glide down these lines below to erase your misconceptions about them. I guess it depends on what your relationship to the necessary shop activities is. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. so im thinking I might as well just get the unramp upper. Adding feedramps - M4Carbine.net The information provided here does not represent the views of Cheaper Than Dirt! It has 2 ramps cut into the receiver to help the rounds feed into the chamber. PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist The best case is to have both an upper and barrel that have the feed ramps. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Should not be too hard. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. M4 Feed ramps on barrel extensions are a solid example. 3. 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. 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. The parts are interchangeable. - 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. Then the manufacturer discontinued the barrel. I don't have much to add re: feed ramps, but. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. For a better experience, please enable JavaScript in your browser before proceeding. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. I too built a .458 SOCOM carbine . I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. Site towers are not "F" marked SPECS: Length- 14.5". You are using an out of date browser. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. M16's fed pretty well before the M4 feed ramps were introduced. 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. Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms FN AR-15 5.56 NATO 20" Hammer Forged Barrel - Black 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. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Pasted as rich text. Cutting M4 feed ramps - Calguns.net Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. M4 barrel to non M4 receiver is fine, but not the other way around. If a barrel comes with the feed ramps could I take them off? The M4 was the first (allegedy) carbine length gas system. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . Edited April 27, 2014 by Mark Gale AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. I have a non ramped barrel in a ramped upper, feeds fine. Reddit and its partners use cookies and similar technologies to provide you with a better experience. When you need to nail something you use a hammer not a wrench. Please allow 5~10 days for assembly and testing before ship date. Looking For Bear Creek Arsenal Barrels Review? I built the upper using a Mega upper with a Compass Lake 18" barrel. 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. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? 11.5", SBN, 1:7, 5.56 NATO Barrel AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle As suggested, its best to match the upper and barrel extension no worries that way. M4 ramps help in feeding in for carbine in full auto. Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist 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. Avoid Polishing Too Lightly Or Too Roughly The difference between standard feed ramps and M4 ramps is easy to see. 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). if you are OK with 3MOA, you might go 20,000 rounds! Shorter length equates to much higher pressure in the upper receiver. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull 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. #2. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Does NOT include pin pictures would help. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. Ready to drop onto a complete lower receiver. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Previous. Is one better than the other? Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. If this is your first visit, be sure to They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. Given that most of us dont always have perfect access to truly genuine Mil-Spec, mil-standard parts (those actually used in issued fighting tools), were shopping based on a little part trust and a bigger part knowledge. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. All Rights Reserved. Barrel customizations are also available. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE Just put it in and shoot it. Only took a few minutes. The barrel is supposed to have the M4 feed ramps. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? It's going to a gunsmith to be shortened and rethreaded anyways, can they just grind/polish the feed ramps to match or is it more involved than that? M4 can better explain their benefit, although they help with more reliable feeding. The barrel Throat is the second most critical component after angles and should be polished with utmost care. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. The Mission of Cheaper Than Dirt! 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. hey bro nice to see you here!!! But, as with anything else, this work can go too far. And that is the important thing! pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. The first reason is that they are, indeed, better. So, what is the difference between M4 feed ramps and regular ones? AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. 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. 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'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? 5. The last is using the best and right ammo for the job. 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
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