So I'm working on my first build, and I'm a little confused. This is a big tip, by the way, for pistol-caliber ARs. The last is using the best and right ammo for the job. So I called. 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. -The Barrel MUST be removed from the Upper Receiver in order to use this Kit.-Never cut or polish the aluminum M4 Feed Ramps in your upper receiver! Copyright 1996-2023 AR15.COM LLC. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. It gives a longer ramp that is less steep into the chamber. Copyright 2016 - 2023 by AdventureFootstep.com. 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. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. Feed ramp - Wikipedia M4 barrel to non M4 receiver is fine, but not the other way around. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. If you want precision, dont look to the mil-spec gun, look to the one that is popular in 3-gun competitions, at Thunder Ranch, etc. The barrel extension and the receiver both have to have the cuts. Brevity matters. 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 Cutting M4 feed ramps - Calguns.net Issues can arise when receivers and barrel extensions are mismatched. Gas block area is .750 diameter. The difference between standard feed ramps and M4 ramps is easy to see. The manufacturer said they had sold hundreds of barrels with out problems reported. Remember less is more, little by little. Somwhere in the 1990s I believe, Colt designed the M4 feed ramps, where they took some of the material out of the upper receiver, cut two little ramps in it and then cut the ramps in the barrel extention a little further forward. 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. Your email address will not be published. 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? can the barrel extension be bought individualy? Went back to the sellers website and found I was not the only one with problems. April 23, 2014 in Rifle - Technical. 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. A couple of times I ended up with the OK set up from the picture above. 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. 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). I built the upper using a Mega upper with a Compass Lake 18" barrel. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. 30 cal. 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. 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. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! can you buy feed ramps individually? You want them to match. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. You need to match up barrels to receivers for optimum performance. Anodized red parts. Either way is good and both types work great with semi auto only guns. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals I don't have much to add re: feed ramps, but. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. But, as with anything else, this work can go too far. Display as a link instead, When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. 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. Moreover, telling someone that an extension can be modified, while not a lie, is nothing more than mental masturbation when your post contains a caveat for having the knowledge and proper tools. Is it worth the extra 50 bucks?" 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. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. Full M4 feed ramps start on the upper and continue onto the barrel extension. Please allow 5~10 days for assembly and testing before ship date. Is one better than the other? This can lead to a rare but odd situation; barrel and receiver mismatch. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. Powered by Invision Community. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. Featuring hand lapped 1/8 twist rate button rifling and M4 feed ramps barrel extensions, the 410 stainless barrel gives the shooter the best balance of weight and accuracy. Thanks! The ramps on the regular rifle-type extension are cut just to the edge of the extension. Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd AR-15 Feed Ramp Problems - School of the American Rifle 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 Differences Between an M4 and an AR15 - Music Raiser *Must have a registered ARFCOM account to win. You need to match up barrels to receivers for optimum performance. 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. My alternative plan is to do exactly as you describe. The information provided here does not represent the views of Cheaper Than Dirt! All things being equal and having used both weapons extensively, Id rather have the feed Ramps. So, lets glide down these lines below to erase your misconceptions about them. CUTTING M4 RAMPS - YouTube Thank you for answering the question do well. All NFA rules apply. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. m4 feed ramps - The Armorer - AR15Armory.com You must log in or register to reply here. Some suggest taking a grinder to the extension area. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Most work performed while-you-wait, evening and saturday appointments available. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. ago KrinkyDink2 9 hr. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper You can post now and register later. 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 After two months of back and forth, cleaned up the feed ramps. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. Watch a video about our Modern Series AR barrel: AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. #2. 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. The best case is to have both an upper and barrel that have the feed ramps. Does NOT include pin All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. Reliability is the main concern for me when I re-barrel this rifle. Little polish. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. M4 ramps help in feeding in for carbine in full auto. The M-16/M4 are great weapons. 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). With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Its a miracle! I prefer them. Seems M4 is all the rage these days. Sent back again. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. In most cases the ramps only help during full auto mode while cycling at a high rate. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. Paste as plain text instead, document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. All we do is dremmel it to match - we dont remove it and grind to any specific angle. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. A closer look at uppers and barrel extensions. Editors Note: This article was originally published in January of 2019. For a better experience, please enable JavaScript in your browser before proceeding. 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. Should not be too hard. 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.) . Use this M4 Barrel extention with M4 feedramps. You are using an out of date browser. I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. M4 feed ramp barrel in a non M4 ramp upper - AR15.COM 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. FN AR-15 5.56 NATO 20" Hammer Forged Barrel - Black 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. 5. Jams and misfires. I can still use the combination. Earlfillmore 13 hr. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. He had more to say and added some more engineer and gun designer speak too. If I was concerned with precision, I would seek out parts from well-known gun makers and customizers Baer comes to mind, Hart barrels, etc etc. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. 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). upper recievers and barrels are hard to comeby. Barrel FAQs | Ballistic Advantage I think your mistaking that with adding ramps to the receiver. All Rights Reserved. With a larger diameter case body sitting down in the magazine, the tip of the bullet sits lower in relation to the chamber/bore centerline than with a .223-size round. With the bcg moving that much faster, the magazine springs were having a hard time supplying the rounds fast enough, AS WELL AS the tips of the rounds were digging into the feed ramps and catching. - 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. Metal cases ammunition such as Wolf through an M4 clone? I will check with compass lake. M4 can better explain their benefit, although they help with more reliable feeding. Description. Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. AR9 - Help diagnosing feeding issue - Calguns.net Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. 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. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . Mil-spec is good for the masses, and if you want the job done it is a great start. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. Press question mark to learn the rest of the keyboard shortcuts. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. For use by barrel manufacturers. This is one time it's better to go a little too far than to leave an edge for the . The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. This 20" BCM barrel is machined from SS410 stainless steel. No Feed Ramps on upper? - General Discussion - 308AR.com Community We have four combinations here: These units actually feature the NON-F-Marked (correct) front sight base. FFL Fax: 866-721-8691. It is milled out of 6061 T6. I just need a little guidance on this and I'm having trouble getting good results from Google. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. 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. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. They were not intended to be super long range man killers. again, Thanks. Previous. What is the difference between Modern, Performance, and Premium Series Barrels? 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-. Only took a few minutes. 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. DSA has fat top, Mueller, non feed ramp uppers for $40. I too built a .458 SOCOM carbine . By Yamil Sued August 6, 2021. There is a picture of the various options, hopefully another poster can link them. Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log AR Tech Tip - Checking M4 Ramps for overhang - YouTube There's a 7 degree difference between standard and M4 ramps. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. The Mission of Cheaper Than Dirt! 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. So, an M4 feed ramp includes the barrel extension and the upper. AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle Do you need an M4 feed ramp on your AR? Here is some info. The M4 was the first (allegedy) carbine length gas system. Feed Ramps -300BlkTalk Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. M4 Feed ramps on barrel extensions are a solid example. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) Ready to drop onto a complete lower receiver. Just because you can, doesn't mean you should. One new winner* is announced every week! Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms Home Firearms Figuring Out Feed Ramps. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. 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. Having been in military supply, I know that what the mil-spec means: it gets the minimum job done for thousands (millions) of parts/systems. Notice how the ramp starts on the barrel extension and not in the receiver. Share it in the comments section. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Interesting reading. I read in Bravo company that there are 2 kinds of flat top upper. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 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). $101.95. Not all mil-spec features advertised on the product information are the real mil-specs. from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. M4 feed ramps. Single Action and Double Action Which One Is Better For You? From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
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