adding m4 feed ramps to barrel

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. I didnt think anything about it having M4 feed ramps. Man, its crazy how many of yall have absolutely no idea why you do what you do. - 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. As they are becoming more and more a standard, and certainly do not do any harm to us. You need to match up barrels to receivers for optimum performance. Theres a bit more to it than just polishing. well.. it's kinda hard to get stuff in this part of the world. 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. 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. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. The manufacturer said they had sold hundreds of barrels with out problems reported. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! First of Im not a gunsmith or firearms professional. You absolutely do not want it the other way around however. Konza Defender M-LOK 5.56 16" Rifle 1x7 FEATURES: 16" 4150 Nitride 1x7 5.56 Barrel T-Marked Upper with M4 Feed Ramps Steel Micro Gas Block, and Carbine Length Gas Tube 15" 7075 T6 Aluminum Free Float M-LOK Hand Guard A2 Muzzle Break BCG is an M16 Style Nitride QPQ Finish Charging Handle Mil-Spec 6 Position Mil-Spec Diameter Stock Single Action and Double Action Which One Is Better For You? I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? 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. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. CARBON-15 Stripped Lower Receiver 3. All Rights Reserved. Whether they materialize or not depends on the direction of the mismatch. 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. Only took a few minutes. M4 can better explain their benefit, although they help with more reliable feeding. 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. 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. Paste as plain text instead, *Must have a registered ARFCOM account to win. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. M4 feed ramps will extend the barrel extension and the upper receiver. So, lets glide down these lines below to erase your misconceptions about them. Factory said its fine . Does anyone have a follow up that confirms or denies my claim? I like all my guns to be reliable. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. Barrel customizations are also available. 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. The ramps on the regular rifle-type extension are cut just to the edge of the extension. DSA has fat top, Mueller, non feed ramp uppers for $40. By Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. One new winner* is announced every week! With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I just need a little guidance on this and I'm having trouble getting good results from Google. Little polish. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. can the barrel extension be bought individualy? M16s and M16-A1s run at 750 rounds per minute in full auto. The Fora platform includes forum software by XenForo. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. Don't forget read more information about it here! To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. 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. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. Edited April 27, 2014 by Mark Gale from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. The ramps are in the barrel extension. If you have an account, sign in now to post with your account. Should not be too hard. The best case is to have both an upper and barrel that have the feed ramps. The first reason is that they are, indeed, better. 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. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. 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. This can lead to a rare but odd situation; barrel and receiver mismatch. again, Thanks. pictures would help. is the m4 feedramp common in barrel extensions? 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. 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. So there's a lot more going on with rounds bouncing up and down in the mags etc. There's a 7 degree difference between standard and M4 ramps. Thats true overall and good to keep in mind. Good call. I'd get jams from bullets hitting the back of the upper so I took a small round file and made the M4 ramps in the upper. The trust part is accepting claims of USGI-spec parts actually being done to not only blueprint dimensions, but also made from the correct materials treated to the same processes. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. "A Bad Day At The Range Is Better Than A Great Day Working". Feed ramps on barrel extensions are a good example. Pasted as rich text. Bear Creek Arsenal Barrels - 6.5 Grendel Type 2 Barrel This Gorilla Machining AR-15 16" heavy Black Nitride 6.5 Grendel barrel has a Carbine length gas system with a 1:8 twist. Is one better than the other? Is getting it as part of the upper better? Then the manufacturer discontinued the barrel. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. 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. 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. Thanks. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. Gun smith said , not head spaced properly. Guess what? check out the. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. Questions on how to install your new BA barrel? 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. If this is your first visit, be sure to The M4 Style Feed ramps And Barrel Extension Provide Consistent Feeding And The Matte Black Manganese Phosphate Finish resists External Corrosion And OxidationLength: 14.70"Model: AR-15Finish: Manganese PhosphateBarrel Type: Carbine LengthBarrel Features: Chrome-LinedManufacturer: FN Mfg Number: 20-100405Model: AR-15 . Thank you for answering the question do well. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. The last is using the best and right ammo for the job. 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. Then you can get a regular rifle barrel for the upper with no ramps. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. If you consider this article useful, share it with anyone in need! I've seen that pic, it is a good reference. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. i have the rifle barrel. Your previous content has been restored. 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. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. Try this little exercise: 1. 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. I will check with compass lake. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! 2. No need to alter the upper. The extension is the part at the end of the barrel that fits inside the upper. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Shorter length equates to much higher pressure in the upper receiver. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. Full M4 feed ramps start on the upper and continue onto the barrel extension. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. Most work performed while-you-wait, evening and saturday appointments available. I'm assuming that you only need the ramps from one or the other. If I can correct an issue before it's an issue that is preferred. 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. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). This is a big tip, by the way, for pistol-caliber ARs. I can probably get the upper reciever first. 30 cal. Press J to jump to the feed. You are using an out of date browser. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. FFL Fax: 866-721-8691. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. First, the M4 barrel and non-M4 upper isnt likely to cause issues, but due to the relief cut on an M4-spec upper, there will be a gap that works like an edge that most definitely can snag the bullet and stub the round. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. 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. Create an account to follow your favorite communities and start taking part in conversations. The barrel extension and the receiver both have to have the cuts. Press question mark to learn the rest of the keyboard shortcuts. Either way is good and both types work great with semi auto only guns. 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. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. Ideally both. In short, if you have a Dremmel you can do it yourself. . [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Looking For Bear Creek Arsenal Barrels Review? Copyright 2016 - 2023 by AdventureFootstep.com. You also repeated yourself. Thread: Adding M4 feedramps to A1/C7 upper. 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 In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. I found the article very informative. BEFORE YOU GO MODIFYING IT, check your headspace.I have a Gibbz upper in my junk drawer because the upper -- for some reason -- wouldn't allow a perfectly good bolt (as checked by Criterion) to headspace correctly on a Criterion barrel, with the bolt installed in the carrier. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Recommend using a gunsmith this route too if you are not comfortable. It is milled out of 6061 T6. For a better experience, please enable JavaScript in your browser before proceeding. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. Any use of this content without express written consent is prohibited. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. A closer look at uppers and barrel extensions. 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. 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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