Home Firearms Figuring Out Feed Ramps. May 17, 2008 in The Armorer. Copyright 1996-2023 AR15.COM LLC. 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. Thread: Adding M4 feedramps to A1/C7 upper.
M4 feed ramp barrel in a non M4 ramp upper - AR15.COM 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. We want you, our readers, to be able to make informed decisions. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? The barrel extension and the receiver both have to have the cuts. Amazing what happens in a thread over a simple question. M4 Feed ramps on barrel extensions are a solid example. Feeds flawlessly. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. So the engineers lowered the feed rampa into the receiver. 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? The Fora platform includes forum software by XenForo. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. 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! 5. FFL Fax: 866-721-8691. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. Thanks. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. 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 have seen it done many, MANY times and if done right, it works/functions 100% without issue. Now, theres nothing wrong at all with a little polish on any and all feed ramps, which can not only be done fairly easily, it can be successfully done by most at home. well.. it's kinda hard to get stuff in this part of the world. 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. I'm a machinist in the aerospace industry and lucky enough to have. My experience with ARs is all A-1s. So, lets glide down these lines below to erase your misconceptions about them. 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 There are now thousands of upper receivers and ready-to-use barrels that have the cuts of 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. 2. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. All uppers are assembled cleaned and tested before shipping. 50 bucks one way or the other on the barrel ain't squat! M4 feed ramps will extend the barrel extension and the upper receiver. You are using an out of date browser. All NFA rules apply.
P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull All comments are held for moderation and will appear after approval. 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 . After two months of back and forth, cleaned up the feed ramps. aaargh.. that's the setup I hate to see.
But, as with anything else, this work can go too far. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. *Must have a registered ARFCOM account to win. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Notice how the ramp starts on the barrel extension and not in the receiver. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. 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. Some argue that, factually, its a step to enable a smoother feeding. Little polish. Description.
FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas Whether they materialize or not depends on the direction of the mismatch. I think my question would be why rifle receiver+M4 barrel is just "ok" rather than "good", unless the point is that in a carbine-gas gun M4 ramps are just considered an improvement over no ramps. 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. Use this M4 Barrel extention with M4 feedramps. Previous. You need to match up barrels to receivers for optimum performance. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). 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.
FN AR-15 5.56 NATO 20" Hammer Forged Barrel - Black The Mission of Cheaper Than Dirt! As suggested, its best to match the upper and barrel extension no worries that way. Feed ramps on barrel extensions are a good example.
Del-Ton, Inc. AR-15 16" M4 Custom Upper 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. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. M4 barrel to non M4 receiver is fine, but not the other way around.
Brevity matters. Would not feed to save its life! In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. AR9 - Help diagnosing feeding issue. I guess it depends on what your relationship to the necessary shop activities is. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). 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. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo.
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. "A Bad Day At The Range Is Better Than A Great Day Working". We have four combinations here: This is one time it's better to go a little too far than to leave an edge for the .
Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms I can probably get the upper reciever first. 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. M4 ramps help in feeding in for carbine in full auto. Earlfillmore 13 hr. The best case is to have both an upper and barrel that have the feed ramps. You want them to match. I'm planning on replacing my forearm with a Larue 13.5. 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. Press question mark to learn the rest of the keyboard shortcuts. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. What is the difference between Modern, Performance, and Premium Series Barrels? 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.
M4-style barrel extension with Rifle-type upper - Rifle - Technical 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 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! M4 can better explain their benefit, although they help with more reliable feeding. Remember less is more, little by little. I found the article very informative. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. A4 Complete Upper Receiver. All we do is dremmel it to match - we dont remove it and grind to any specific angle. Share it in the comments section. Backing up a ton: The ramps on regular barrel extension are cut just to the edges, while the M4 feed ramps have deeper cuts in the M4-spec upper receiver. Either way is good and both types work great with semi auto only guns. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. They guide the bullet up and into the chamber. No feed ramps. . 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. I didnt think anything about it having M4 feed ramps.
Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log 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.
How to Clone the M16A2 Rifle - The New Rifleman Do you have an AR barrel or feed ramp tip? Go back to writing school.
Cutting M4 feed ramps - Calguns.net You need to match up barrels to receivers for optimum performance. 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 . Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. 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. Any body need a anchor for a very small boat? i have the rifle barrel. I don't have much to add re: feed ramps, but. This can lead to a rare but odd situation; barrel and receiver mismatch. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. In short, if you have a Dremmel you can do it yourself. 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. The mil actually only specs M4 feed ramps for use in its M4s. Reliability is the main concern for me when I re-barrel this rifle. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. By Yamil Sued August 6, 2021. 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. Sorta. Thanks for explaining the feed ramp topic in a couple of different ways. You cannot paste images directly. For a better experience, please enable JavaScript in your browser before proceeding. Create an account to follow your favorite communities and start taking part in conversations. As they are becoming more and more a standard, and certainly do not do any harm to us. 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. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. It gives a longer ramp that is less steep into the chamber. 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? I just need a little guidance on this and I'm having trouble getting good results from Google. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. 3. The rifle-platform M16s dont use them. 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).
6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas One new winner* is announced every week! Ideally both. "It will last 5k rounds instead of 4k. I've seen that pic, it is a good reference. 3.
M4 Feedramps - AR-15 Pro No Feed Ramps on upper? - General Discussion - 308AR.com Community 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 Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More!
AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums Only took a few minutes. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. I suggest you get a rifle receiver. 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. Press J to jump to the feed. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. The information provided here does not represent the views of Cheaper Than Dirt! AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. I notice that's a Gibbz (or Gibbz-type) upper. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle.
Adding M4 feedramps to A1/C7 upper - M4Carbine.net 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. 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.
AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM I built the upper using a Mega upper with a Compass Lake 18" barrel. Notify me of follow-up comments by email. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. And that is the important thing! Edited April 27, 2014 by Mark Gale which is basicallly an m16a1 cut down. If you consider this article useful, share it with anyone in need! Copyright 1996-2023 AR15.COM LLC. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. M4 Feed ramps on barrel extensions are a solid example. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Is getting it as part of the upper better? Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. 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. 1 is a standard and the other for use with m4 feed ramp barrels. Gas block area is .750 diameter. Questions on how to install your new BA barrel? Sent back again. 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. The photo shows the dents and the bolt lugs line up perfectly.
M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just Do you need an M4 feed ramp on your AR? Here is some info. 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. CARBON-15 Stripped Lower Receiver Lol. Which Model Colt 1911 is For Me? If I can correct an issue before it's an issue that is preferred. Add 3% to the total cost for credit card purchases. 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. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Finding the proper upper receiver is your best option. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel?
Rifle vs m4 feed ramps - AR15.COM Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. The parts are interchangeable. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. BrianEnos.com The best case is to have both an upper and barrel that have the feed ramps. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. Press question mark to learn the rest of the keyboard shortcuts. In case My barrel is rifle ramp it won't be so bad after all. Watch a video about our Modern Series AR barrel: 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). Its a miracle!
Making a non M4 feed ramp barrel work in an M4 feed ramp upper. I too built a .458 SOCOM carbine .