Does anyone have a follow up that confirms or denies my claim? 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. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? 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. Notify me of follow-up comments by email. We want you, our readers, to be able to make informed decisions.
Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Use this M4 Barrel extention with M4 feedramps. 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. I don't have much to add re: feed ramps, but. 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. Costs about $40-50 to have the feed ramps reprofiled from what I can gather.
M4 Barrel Extension (M4 Feedramps) - Bravo Company USA So I called. Home Firearms Figuring Out Feed Ramps. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. Your previous content has been restored. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) 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. 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 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. Issues can arise when receivers and barrel extensions are mismatched. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. I guess it depends on what your relationship to the necessary shop activities is. The barrels also had to be modified. check out the. And that is the important thing! And it appears that the bolt is slamming into the top of the bullet. 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 . You can always buy a non-m4 extension and have the new barrel retimed and headspaced, but it will probably cost more than a new upper receiver. I like all my guns to be reliable. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Feels like a silly question now that it makes sense. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Is one better than the other?
The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. All NFA rules apply. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Thank you for answering the question do well.
Cutting M4 feed ramps - Calguns.net I prefer them. 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. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. 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. I read in Bravo company that there are 2 kinds of flat top upper. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. True, which is why they're not even needed in semi autos.
Feed ramp - Wikipedia Rifle vs m4 feed ramps - AR15.COM Your email address will not be published. The Fora platform includes forum software by XenForo. 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. The mil actually only specs M4 feed ramps for use in its M4s. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). 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.
P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull can the barrel extension be bought individualy? $101.95.
PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. This can lead to a rare but odd situation; barrel and receiver mismatch. All Rights Reserved. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership.
M4-style barrel extension with Rifle-type upper - Rifle - Technical A4 Complete Upper Receiver. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? Little polish. The parts are interchangeable. 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'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. Press question mark to learn the rest of the keyboard shortcuts. Sent back again. I should have taken my own advice for once. By Yamil Sued August 6, 2021. Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . I have looked and looked and looked. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested.
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. Thread: Adding M4 feedramps to A1/C7 upper. Went back to the sellers website and found I was not the only one with problems. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. 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. 50 bucks one way or the other on the barrel ain't squat! Some argue that, factually, its a step to enable a smoother feeding. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. Thanks for explaining the feed ramp topic in a couple of different ways. Full M4 feed ramps start on the upper and continue onto 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. I cant advise on that one folks. 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'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. 's blog. Some suggest taking a grinder to the extension area. M4 can better explain their benefit, although they help with more reliable feeding.
Feed Ramps -300BlkTalk It's best to use rifle/rifle combo or M4/M4. Factory said its fine . Copyright 2016 - 2023 by AdventureFootstep.com. JavaScript is disabled.
Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals LanceRiley, Polishing the edges of the chamber mouth to remove the edges of that chamfer will. You can post now and register later. All Rights Reserved. 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. Its also recommended you polish the ramps once youve achieved the appropriate angle. BrianEnos.com And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. This has been my concern with modifying the aluminum parts. Just because you can, doesn't mean you should. Reach in through the ejection port and slide the on deck cartridge about 1/4 inch forward and observe the tip of the bullet in relationship to the barrel extension. Gun smith said , not head spaced properly. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. You will be able to leave a comment after signing in, AR15Armory.com Insert the barrel and sharpie the cut area, then use the right bit on a dremel. I'm planning on replacing my forearm with a Larue 13.5. Ok, So, in short, I've got a barrel on my Armalite upper (with M4 feed ramps in the upper) that has standard AR-15 (non-M4) ramps. EDIT: Okay, I understand now! We have four combinations here: That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Powered by Invision Community. are all barrels w/ m4 feed ramps?? Only took a few minutes. One new winner* is announced every week! 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. 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. What's the difference? If it's happening regularly, check the magazines you are using for serviceability.
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. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . I didnt think anything about it having M4 feed ramps. 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. Ready to drop onto a complete lower receiver. 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. A closer look at uppers and barrel extensions. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. Which Model Colt 1911 is For Me? A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. and add them to non-m4 barrels.? Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). So the engineers lowered the feed rampa into the receiver. You need to match up barrels to receivers for optimum performance. I had seen these pix years ago and dismissed the idea of mix and match. I'll probably build a pistol out of this one. 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. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? The manufacturer said they had sold hundreds of barrels with out problems reported. I checked what I have now. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin.
Modify AR15 A2 barrel extension for M4 feed ramp? #2. Does NOT include pin It's best to have M4 ramps on both the upper and barrel. April 23, 2014 in Rifle - Technical. A couple of times I ended up with the OK set up from the picture above. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. 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. Is getting it as part of the upper better? All things being equal and having used both weapons extensively, Id rather have the feed Ramps. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. Display as a link instead, I can still use the combination. Anodized red parts. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. M16's fed pretty well before the M4 feed ramps were introduced. Check often for fit.
M4 Feedramps - AR-15 Pro FFL Fax: 866-721-8691. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. 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. Add 3% to the total cost for credit card purchases. 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. -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!
[WTB] Black A1 carry handle upper NON-m4 feed ramp $200 There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. A forum community dedicated to drag racing drivers and enthusiasts. I picked up a side charging upper from Sundevil last year. If your magazines are set up correctly, and the feed lip edges polished smooth, each round fed from the magazine will go directly into the chamber. 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?
No Feed Ramps on upper? - General Discussion - 308AR.com Community 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. I too built a .458 SOCOM carbine . However, an M4 barrel extension is dished more so the feed ramps could extend downward, and then an area within the upper is shaped to match. Does it make a big difference? 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). The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. 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. "A Bad Day At The Range Is Better Than A Great Day Working". Paste as plain text instead, From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. what does it do??
Should M4 feed ramps come with the barrel or upper? : r/ar15 - reddit It has 2 ramps cut into the receiver to help the rounds feed into the chamber. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. 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. 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.
Barrel FAQs | Ballistic Advantage 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. After two months of back and forth, cleaned up the feed ramps. Amazing what happens in a thread over a simple question.
3. For use by barrel manufacturers. The tip of the cartridge rarely comes into contact with the upper receiver. 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. Mil-spec is good for the masses, and if you want the job done it is a great start.
6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. Theres a bit more to it than just polishing. Get The Best Trigger Pull Gauges To Make Every Shot Count. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. Reliability is the main concern for me when I re-barrel this rifle. Modern Series Barrels. i have the rifle barrel. ago KrinkyDink2 9 hr. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. 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. Finding the proper upper receiver is your best option. I notice that's a Gibbz (or Gibbz-type) upper. All we do is dremmel it to match - we dont remove it and grind to any specific angle. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device.
Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist Proper maintenance and lubrication. 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.
Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms DSA has fat top, Mueller, non feed ramp uppers for $40. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. 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). Seems M4 is all the rage these days. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
AR-15 Feed Ramp Problems - School of the American Rifle There is a picture of the various options, hopefully another poster can link them. Any use of this content without express written consent is prohibited.
Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. 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. I suggest you get a rifle 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 . from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. Since the M4 barrel is one and a half inches shorter than the minimum legal barrel you can install in an AR15, the M4 gas tube will be, of course, smaller. Copyright 1996-2023 AR15.COM LLC. Dec 17, 2020. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. 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). M4 ramps help in feeding in for carbine in full auto. Press question mark to learn the rest of the keyboard shortcuts.
Standard vs M4 Feed Ramps, what's the difference #1056 Del-Ton, Inc. AR-15 16" M4 Custom Upper The Mission of Cheaper Than Dirt! Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. Caught a deal on a matched barrel and bolt. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. 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. 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. Interesting reading. It is milled out of 6061 T6. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. 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. You have a rifle barrel.
Getting the AR Barrel and Receiver Configuration Correct I use it for hunting dogs only. practical_man Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. You must log in or register to reply here. 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
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