Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. Inadequate knowledge about these feed ramps can lead to lots of problems with barrels because they are essential parts to guide the bullet up and into the chamber. ago KrinkyDink2 9 hr. Your link has been automatically embedded. JavaScript is disabled. It's best to use rifle/rifle combo or M4/M4. Please be respectful of others. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. 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. upper recievers and barrels are hard to comeby. Thanks for explaining the feed ramp topic in a couple of different ways. I got my help from this thread, and thank you again to ORD. 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells There's a 7 degree difference between standard and M4 ramps. Experts advise on 31 degrees+30 minus-zip. Any use of this content without express written consent is prohibited. The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. If it's happening regularly, check the magazines you are using for serviceability. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. . The best case is to have both an upper and barrel that have the feed ramps. The barrel Throat is the second most critical component after angles and should be polished with utmost care. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. 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 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. The best case is to have both an upper and barrel that have the feed ramps. You have a rifle barrel. 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. Edited April 27, 2014 by Mark Gale As they are becoming more and more a standard, and certainly do not do any harm to us. Then the manufacturer discontinued the barrel. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. 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 While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. 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). Does it make a big difference? Display as a link instead, 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. A closer look at uppers and barrel extensions. Anodized red parts. aaargh.. that's the setup I hate to see. If a barrel comes with the feed ramps could I take them off? 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. The Mission of Cheaper Than Dirt! VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. 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. 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. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. Feed Ramps -300BlkTalk He had more to say and added some more engineer and gun designer speak too. 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. This 20" BCM barrel is machined from SS410 stainless steel. Full M4 feed ramps start on the upper and continue onto the barrel extension. Press question mark to learn the rest of the keyboard shortcuts. Went back to the sellers website and found I was not the only one with problems. "It will last 5k rounds instead of 4k. M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Is getting it as part of the upper better? 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. Do you have an AR barrel or feed ramp tip? AR-15 Feed Ramp Problems - School of the American Rifle Get The Best Trigger Pull Gauges To Make Every Shot Count. 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. Reliability is the main concern for me when I re-barrel this rifle. I use it for hunting dogs only. Thanks. I notice that's a Gibbz (or Gibbz-type) upper. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. True, which is why they're not even needed in semi autos. Earlfillmore 13 hr. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. I cant advise on that one folks. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M If you don't clean it but demand 3/4MOA you might get 1,500. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. Ready to drop onto a complete lower receiver. What's the difference? That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? 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. How to Clone the M16A2 Rifle - The New Rifleman Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. They guide the bullet up and into the chamber. #2. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. No feed ramps. practical_man I should have taken my own advice for once. If this is your first visit, be sure to Getting the AR Barrel and Receiver Configuration Correct In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. Don't forget read more information about it here! 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.) . As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log 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 Rights Reserved. It's best to use rifle/rifle combo or M4/M4. M4-style barrel extension with Rifle-type upper - Rifle - Technical I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. BCM 16" M4 Carbine Upper Receiver Group | BravoCompanyUSA Should M4 feed ramps come with the barrel or upper? : r/ar15 - reddit Just because you can, doesn't mean you should. It may not display this or other websites correctly. I prefer them. M4 ramps help in feeding in for carbine in full auto. Jams and misfires. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. Press question mark to learn the rest of the keyboard shortcuts. Copyright 1996-2023 AR15.COM LLC. Brevity matters. PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist Go slow and you'll be done in no time. Feed ramp - Wikipedia M4 can better explain their benefit, although they help with more reliable feeding. Ideally both. 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. For new construction barrels only. LanceRiley, Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. Thats why AR10s- And Scar heavies exist for. 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). If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. In case My barrel is rifle ramp it won't be so bad after all. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. I have looked and looked and looked. 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. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces Press J to jump to the feed. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. You need to match up barrels to receivers for optimum performance. Do you need an M4 feed ramp on your AR? Here is some info. 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. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. Any body need a anchor for a very small boat? M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just 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 My alternative plan is to do exactly as you describe. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. 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. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. 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. Feed ramps on barrel extensions are a good example. Adding feedramps - M4Carbine.net Theres a bit more to it than just polishing. Would not feed to save its life! Issues can arise when receivers and barrel extensions are mismatched. 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. 2. And it appears that the bolt is slamming into the top of the bullet. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. 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. Just put it in and shoot it. Its not a big deal but still an important thing to remember and understand. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. Read Now. AR9 - Help diagnosing feeding issue. The barrel extension and the receiver both have to have the cuts. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. All comments are held for moderation and will appear after approval. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. 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. Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd 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. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. pictures would help. AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums My experience with ARs is all A-1s. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. The barrels also had to be modified. M16s and M16-A1s run at 750 rounds per minute in full auto. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. Married pretty well with my Seekins machined lower. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. M4 Feedramps - AR-15 Pro 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? DoubleStar M4 clone opinions | Survivalist Forum JavaScript is disabled. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. which is basicallly an m16a1 cut down. Your email address will not be published. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. . We want you, our readers, to be able to make informed decisions. Press J to jump to the feed. What is the difference between Modern, Performance, and Premium Series Barrels? It has 2 ramps cut into the receiver to help the rounds feed into the chamber. You absolutely do not want it the other way around however. AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle Seems M4 is all the rage these days. 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. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). FN AR-15 5.56X45mm Nato . - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. Man, its crazy how many of yall have absolutely no idea why you do what you do. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. These units actually feature the NON-F-Marked (correct) front sight base. 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 . P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull They were not intended to be super long range man killers. can the barrel extension be bought individualy? By Yamil Sued August 6, 2021. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? A4 Complete Upper Receiver. 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. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. The tip of the cartridge rarely comes into contact with the upper receiver. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? A couple of times I ended up with the OK set up from the picture above. 30 cal. 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. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Previous. 3. 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. It gives a longer ramp that is less steep into the chamber. I'm a machinist in the aerospace industry and lucky enough to have. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. 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. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. i have the rifle barrel. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. I'm planning on replacing my forearm with a Larue 13.5. 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. Only took a few minutes. Either way is good and both types work great with semi auto only guns. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. Copyright 2016 - 2023 by AdventureFootstep.com. 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. For a better experience, please enable JavaScript in your browser before proceeding. I don't have much to add re: feed ramps, but. Bullets tend to bump, snag, and stub on these guns. 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 . I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. 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. 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. M4 feed ramps. Full M4 feed ramps are on both the upper and barrel extension. 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. The barrel blanks available are made from 416 Stainless Steel. Finding the proper upper receiver is your best option. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. But, as with anything else, this work can go too far. Site towers are not "F" marked SPECS: Length- 14.5". Reddit and its partners use cookies and similar technologies to provide you with a better experience. For a better experience, please enable JavaScript in your browser before proceeding. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. I picked up a side charging upper from Sundevil last year. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. I have a non ramped barrel in a ramped upper, feeds fine. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. 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. Semi autos run slower than full autos. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. The information provided here does not represent the views of Cheaper Than Dirt! The difference between standard feed ramps and M4 ramps is easy to see. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. So I called. I like getting another Upper idea then you could end up with two rifles! 4. 50 bucks one way or the other on the barrel ain't squat! The parts are interchangeable. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. Some argue that, factually, its a step to enable a smoother feeding. The barrel is supposed to have the M4 feed ramps. 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. We have four combinations here: Recommend using a gunsmith this route too if you are not comfortable.
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