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. Modern Series Barrels. 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! 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. Does anyone have a follow up that confirms or denies my claim? A closer look at uppers and barrel extensions. Ready to drop onto a complete lower receiver. Adding M4 feedramps to A1/C7 upper - M4Carbine.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. Then you can get a regular rifle barrel for the upper with no ramps. So, an M4 feed ramp includes the barrel extension and the upper. M4 Feed ramps on barrel extensions are a solid example. Little polish. As they are becoming more and more a standard, and certainly do not do any harm to us. Man, its crazy how many of yall have absolutely no idea why you do what you do. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M 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. Reddit and its partners use cookies and similar technologies to provide you with a better experience. 5. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. You will be able to leave a comment after signing in, AR15Armory.com 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 mil actually only specs M4 feed ramps for use in its M4s. JavaScript is disabled. Is one better than the other? Modify AR15 A2 barrel extension for M4 feed ramp? By Yamil Sued August 6, 2021. You can post now and register later. 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. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA I don't have much to add re: feed ramps, but. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. I found the article very informative. I'll probably build a pistol out of this one. FN AR-15 5.56X45mm Nato . pictures would help. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. FFL Fax: 866-721-8691. AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM A feed ramp is a basic feature of many breech loading cartridge firearm designs. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. "It will last 5k rounds instead of 4k. 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. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Notify me of follow-up comments by email. Proper maintenance and lubrication. A forum community dedicated to drag racing drivers and enthusiasts. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. The M4 was the first (allegedy) carbine length gas system. 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. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper Experts advise on 31 degrees+30 minus-zip. 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. No Feed Ramps on upper? - General Discussion - 308AR.com Community As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. 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. All Rights Reserved. Upload or insert images from URL. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Del-Ton, Inc. AR-15 16" M4 Custom Upper AR-15 Barrel Extension Question - Sniper's Hide Forum The Fora platform includes forum software by XenForo. AR-15 Feed Ramp Problems - School of the American Rifle 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. Full M4 feed ramps are on both the upper and barrel extension. Create an account to follow your favorite communities and start taking part in conversations. 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 cant advise on that one folks. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? Check often for fit. Do you need an M4 feed ramp on your AR? Here is some info. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. AR Tech Tip - Checking M4 Ramps for overhang - YouTube I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. The Mission of Cheaper Than Dirt! Go back to writing school. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. The magazine lips cannot move, so with these larger diameter cartridges, the bullet tips down lower about the centerline of the bore (half of the diameter increase to be exact). In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. hey bro nice to see you here!!! I have seen it done many, MANY times and if done right, it works/functions 100% without issue. 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. This has been my concern with modifying the aluminum parts. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. #2. Does it make a big difference? Full M4 feed ramps start on the upper and continue onto the barrel extension. 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. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) I will check with compass lake. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. So, an M4 feed ramp includes the barrel extension and the upper. I like all my guns to be reliable. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. M4 feed ramps. 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. 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.) . Whether they materialize or not depends on the direction of the mismatch. I like getting another Upper idea then you could end up with two rifles! This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. The ramps on the regular rifle-type extension are cut just to the edge of the extension. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. 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). "A Bad Day At The Range Is Better Than A Great Day Working". Only took a few minutes. Display as a link instead, Editors Note: This article was originally published in January of 2019. Guess what? Copyright 1996-2023 AR15.COM LLC. For a better experience, please enable JavaScript in your browser before proceeding. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces This is a big tip, by the way, for pistol-caliber ARs. Feed ramp - Wikipedia 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. May 17, 2008 in The Armorer. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. 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. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. You need to match up barrels to receivers for optimum performance. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Thanks. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE CARBON-15 Stripped Lower Receiver Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? The Differences Between an M4 and an AR15 - Music Raiser Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. Getting the AR Barrel and Receiver Configuration Correct By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Metal cases ammunition such as Wolf through an M4 clone? If you don't clean it but demand 3/4MOA you might get 1,500. So I called. So, I had purchased a 458 upper. DoubleStar M4 clone opinions | Survivalist Forum Cutting M4 feed ramps - Calguns.net The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. 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. You can modify the upper, but bear in mind that the un-anodized aluminum surface will be very soft and prone to wear if your particular bullet hits it frequently. It's best to have M4 ramps on both the upper and barrel. So like ORD says it is entirely 100% possible and plenty of people do it, but I would rather not do any work to this perfect barrel. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. 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. All comments are held for moderation and will appear after approval. I think your mistaking that with adding ramps to the receiver. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? Reliability is the main concern for me when I re-barrel this rifle. 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. 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. Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist Thanks! Feed ramps on barrel extensions are a good example. Anodized red parts. Earlfillmore 13 hr. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . I've seen that pic, it is a good reference. - 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. These units actually feature the NON-F-Marked (correct) front sight base. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). Gun smith said , not head spaced properly. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. 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. 2. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more 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. My alternative plan is to do exactly as you describe. Good call. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. 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 . 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. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. 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. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. 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. 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. -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! BrianEnos.com If a barrel comes with the feed ramps could I take them off? The barrel Throat is the second most critical component after angles and should be polished with utmost care. Shorter length equates to much higher pressure in the upper receiver. However, I have seen more than a few basement gunsmith hackjobs using a dremel, some Jack Daniels/liquid courage, and an unsteady hand that have made a total, unrepairable mess of the job. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. After two months of back and forth, cleaned up the feed ramps. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. Just put it in and shoot it. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. 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. What is the difference between Modern, Performance, and Premium Series Barrels? Mil-spec is good for the masses, and if you want the job done it is a great start. For new construction barrels only. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum Pasted as rich text. 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. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. 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 Amazing what happens in a thread over a simple question. Watch a video about our Modern Series AR barrel: Share it in the comments section. Both. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. Only took a few minutes. AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. Forged 7075-T6 aluminum is harder than a bulls balls. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . The extension is the part at the end of the barrel that fits inside the upper. 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Change the angle so that the ramp ends at the exact same point. Don't forget read more information about it here! You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. 4. EDIT: Okay, I understand now! Press J to jump to the feed. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. The information provided here does not represent the views of Cheaper Than Dirt! I'm a machinist in the aerospace industry and lucky enough to have. 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. If I can correct an issue before it's an issue that is preferred. You also repeated yourself. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. For a better experience, please enable JavaScript in your browser before proceeding. It may not display this or other websites correctly.
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