adding m4 feed ramps to barrel

You need to match up barrels to receivers for optimum performance. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. can the barrel extension be bought individualy? Finding the proper upper receiver is your best option. The M4 was the first (allegedy) carbine length gas system. For those who have actually done it will a new barrel with the M4 feed ramp extension function properly with an old school rifle-type upper receiver? No need to alter the upper. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. 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 . which is basicallly an m16a1 cut down. I picked up a side charging upper from Sundevil last year. I like getting another Upper idea then you could end up with two rifles! Thats true overall and good to keep in mind. 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). I have seen it done many, MANY times and if done right, it works/functions 100% without issue. A closer look at uppers and barrel extensions. True, which is why they're not even needed in semi autos. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. The last is using the best and right ammo for the job. I can assure you that most mods that deviate from the original design aren't 100% reliable. Lol. You can post now and register later. -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! Go slow and you'll be done in no time. 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. 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. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. 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. He had more to say and added some more engineer and gun designer speak too. Please be respectful of others. Watch a video about our Modern Series AR barrel: 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. I built the upper using a Mega upper with a Compass Lake 18" barrel. Modern Series Barrels. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. Reddit and its partners use cookies and similar technologies to provide you with a better experience. What is the difference between Modern, Performance, and Premium Series Barrels? It's best to use rifle/rifle combo or M4/M4. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. Press question mark to learn the rest of the keyboard shortcuts. Regular feed ramps are cuts into the barrel extension only, which allows guiding the round into the chamber during loading, making them a fundamental feature of many breech-loading firearm designs. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. If you have an account, sign in now to post with your account. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). You also repeated yourself. Full M4 feed ramps are on both the upper and barrel extension. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Do you have an AR barrel or feed ramp tip? if you are OK with 3MOA, you might go 20,000 rounds! This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. M4 ramps help in feeding in for carbine in full auto. AR9 - Help diagnosing feeding issue. When you need to nail something you use a hammer not a wrench. 50 bucks one way or the other on the barrel ain't squat! Site towers are not "F" marked SPECS: Length- 14.5". First of Im not a gunsmith or firearms professional. Jams and misfires. By Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. For new construction barrels only. It gives a longer ramp that is less steep into the chamber. . From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. We have four combinations here: Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . Editors Note: This article was originally published in January of 2019. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. The barrel blanks available are made from 416 Stainless Steel. Feed ramps being m4 or. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? For a better experience, please enable JavaScript in your browser before proceeding. Does anyone have a follow up that confirms or denies my claim? Change the angle so that the ramp ends at the exact same point. I have looked and looked and looked. 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. My alternative plan is to do exactly as you describe. 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. 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. Whether they materialize or not depends on the direction of the mismatch. Does it make a big difference? So, I had purchased a 458 upper. CARBON-15 Stripped Lower Receiver In case My barrel is rifle ramp it won't be so bad after all. 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-. The barrels also had to be modified. 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. 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. Description. 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. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. You want them to match. Feed ramps on barrel extensions are a good example. Not all mil-spec features advertised on the product information are the real mil-specs. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps In most cases the ramps only help during full auto mode while cycling at a high rate. All uppers are assembled cleaned and tested before shipping. #2. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. No feed ramps. again, Thanks. 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. . Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. You absolutely do not want it the other way around however. M16's fed pretty well before the M4 feed ramps were introduced. instead of mil-spec. The tip of the cartridge rarely comes into contact with the upper receiver. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. ago KrinkyDink2 9 hr. 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. Recommend using a gunsmith this route too if you are not comfortable. 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. Barrel customizations are also available. It is removeable with a special wrench and a barrel clamp/vise. So the engineers lowered the feed rampa into the receiver. M4 Feed ramps on barrel extensions are a solid example. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. This 20" BCM barrel is machined from SS410 stainless steel. Your previous content has been restored. I use it for hunting dogs only. The rifle-platform M16s dont use them. In short, if you have a Dremmel you can do it yourself. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. $101.95. 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. 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). The M-16/M4 are great weapons. They were not intended to be super long range man killers. Its also recommended you polish the ramps once youve achieved the appropriate angle. One of the AR15 engineers under Gene Stoner pretty much said that the M4 isn't a good platform, especially once the gas port erodes a bit. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. 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. Your email address will not be published. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). Copyright 1996-2023 AR15.COM LLC. 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. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 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. Add 3% to the total cost for credit card purchases. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. Use this M4 Barrel extention with M4 feedramps. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. If I can correct an issue before it's an issue that is preferred. I had seen these pix years ago and dismissed the idea of mix and match. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. By Yamil Sued August 6, 2021. They . 308 m5 using m4 feed ramps, which I belive are for the smaller round like. Dec 17, 2020. The Mission of Cheaper Than Dirt! The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. The barrel Throat is the second most critical component after angles and should be polished with utmost care. I have a non ramped barrel in a ramped upper, feeds fine. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. Issues can arise when receivers and barrel extensions are mismatched. Mil-spec is good for the masses, and if you want the job done it is a great start. Thank you for answering the question do well. 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. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. What is an m4 feed ramp? 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. This is one time it's better to go a little too far than to leave an edge for the . 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. 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. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. You are using an out of date browser. All Rights Reserved. FN AR-15 5.56X45mm Nato . AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. so im thinking I might as well just get the unramp upper. Press J to jump to the feed. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. I like all my guns to be reliable. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. 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). We want you, our readers, to be able to make informed decisions. 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 You have the option of barrel type, thread, fluting, finish type and to add a match bolt. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. So, an M4 feed ramp includes the barrel extension and the upper. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. 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). [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. Also, barrel life is relative. Gun smith said , not head spaced properly. I got my help from this thread, and thank you again to ORD. Barrel, sight and trigger work on most pistols and shotguns. Notice how the ramp starts on the barrel extension and not in the receiver. So I called. I guess it depends on what your relationship to the necessary shop activities is. Factory said its fine . M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. All NFA rules apply. You cannot paste images directly. Interesting reading. This is a big tip, by the way, for pistol-caliber ARs. As suggested, its best to match the upper and barrel extension no worries that way. . From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. 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? BrianEnos.com Required fields are marked *. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Full M4 feed ramps start on the upper and continue onto the barrel extension. Any use of this content without express written consent is prohibited. 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! 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. So, what is the difference between M4 feed ramps and regular ones? Guess what? Should not be too hard. Seems M4 is all the rage these days. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. 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. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. 4. Create an account to follow your favorite communities and start taking part in conversations. I'll probably build a pistol out of this one. By And that is the important thing! 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 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. 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. 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. Is getting it as part of the upper better? Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. So I'm working on my first build, and I'm a little confused. M4 can better explain their benefit, although they help with more reliable feeding. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. A4 Complete Upper Receiver. I just need a little guidance on this and I'm having trouble getting good results from Google. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. The Fora platform includes forum software by XenForo. I've seen that pic, it is a good reference. M4 barrel to non M4 receiver is fine, but not the other way around. You wrote that much to make a point that should have taken about 100 words? 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. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. There's a 7 degree difference between standard and M4 ramps. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. It was in the last few issues of SAR. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. Semi autos run slower than full autos. Go back to writing school. It's an interesting question. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. 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. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. Metal cases ammunition such as Wolf through an M4 clone? Paste as plain text instead, I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. However Ive built numerous ar15 and lr308 rifles and pistols. On the other hand, I wouldn't consider them as a deal breaker, and they would not pass up a good deal with an upper only because it did not have them - the M4 feed ramps. Pasted as rich text. Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. Sent back again. It's best to use rifle/rifle combo or M4/M4. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. 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. Then you can get a regular rifle barrel for the upper with no ramps. Here you can see an upper with "rifle" feedramps. Check often for fit. Any body need a anchor for a very small boat? ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Ready to drop onto a complete lower receiver. I notice that's a Gibbz (or Gibbz-type) upper. So, an M4 feed ramp includes the barrel extension and the upper. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver.

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