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Recommend using a gunsmith this route too if you are not comfortable. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. Proper maintenance and lubrication. Full M4 feed ramps start on the upper and continue onto the barrel extension. Questions on how to install your new BA barrel? pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. If you don't clean it but demand 3/4MOA you might get 1,500. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. The Mission of Cheaper Than Dirt! This is one time it's better to go a little too far than to leave an edge for the . 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. 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. 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. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Notice how the ramp starts on the barrel extension and not in the receiver. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. 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. upper recievers and barrels are hard to comeby. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. Paste as plain text instead, 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. Feels like a silly question now that it makes sense. All NFA rules apply. 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). Full M4 feed ramps start on the upper and continue onto the barrel extension. 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. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. The trust part is accepting claims of USGI-spec parts actually being done to not only blueprint dimensions, but also made from the correct materials treated to the same processes. well.. it's kinda hard to get stuff in this part of the world. can you buy feed ramps individually? By M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 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. 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. 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. I cant advise on that one folks. You are using an out of date browser. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. So there's a lot more going on with rounds bouncing up and down in the mags etc. 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? FN AR-15 5.56X45mm Nato . Earlfillmore 13 hr. Your email address will not be published. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. 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. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. I too built a .458 SOCOM carbine . You must log in or register to reply here. is the m4 feedramp common in barrel extensions? Full M4 feed ramps are on both the upper and barrel extension. Brevity matters. 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. 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! For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. April 23, 2014 in Rifle - Technical. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. Would not feed to save its life! They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Required fields are marked *. M4 ramps help in feeding in for carbine in full auto. Guess what? This is a big tip, by the way, for pistol-caliber ARs. True, which is why they're not even needed in semi autos. Please allow 5~10 days for assembly and testing before ship date. 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. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. I checked what I have now. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. The last is using the best and right ammo for the job. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. . So, an M4 feed ramp includes the barrel extension and the upper. JavaScript is disabled. The best case is to have both an upper and barrel that have the feed ramps. And that is the important thing! 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. For new construction barrels only. 's blog. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. so im thinking I might as well just get the unramp upper. Thread: Adding M4 feedramps to A1/C7 upper. 50 bucks one way or the other on the barrel ain't squat! I'm planning on replacing my forearm with a Larue 13.5. No need to alter the upper. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. 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 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. It's best to have M4 ramps on both the upper and barrel. I read in Bravo company that there are 2 kinds of flat top upper. Damaged Ak front end Barrel in Trunnion with or without sight bases. Powered by Invision Community. Single Action and Double Action Which One Is Better For You? Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. Either way is good and both types work great with semi auto only guns. Home Firearms Figuring Out Feed Ramps. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. What's the difference? Is getting it as part of the upper better? 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 M4 Feed ramps on barrel extensions are a solid example. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . May 17, 2008 in The Armorer. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) *Must have a registered ARFCOM account to win. Ready to drop onto a complete lower receiver. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. The barrel extension and the receiver both have to have the cuts. 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 also repeated yourself. My alternative plan is to do exactly as you describe. 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. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. 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. Clear editor. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. 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. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. check out the. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. JavaScript is disabled. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. #2. By Yamil Sued August 6, 2021. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. I will check with compass lake. A couple of times I ended up with the OK set up from the picture above. They guide the bullet up and into the chamber. The ramps on the regular rifle-type extension are cut just to the edge of the extension. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Previous. So, what is the difference between M4 feed ramps and regular ones? Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? 308 m5 using m4 feed ramps, which I belive are for the smaller round like. CARBON-15 Stripped Lower Receiver You need to match up barrels to receivers for optimum performance. Its a miracle! 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? Powered by Invision Community, M4-style barrel extension with Rifle-type upper. M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. Dec 17, 2020. 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. BrianEnos.com Thats why AR10s- And Scar heavies exist for. These units actually feature the NON-F-Marked (correct) front sight base. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. I suggest you get a rifle receiver. 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. There's a 7 degree difference between standard and M4 ramps. Notify me of follow-up comments by email. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. 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. For a better experience, please enable JavaScript in your browser before proceeding. The photo shows the dents and the bolt lugs line up perfectly. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Bullets tend to bump, snag, and stub on these guns. 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. 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. Finding the proper upper receiver is your best option. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. 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. A feed ramp is a basic feature of many breech loading cartridge firearm designs. 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). Semi autos run slower than full autos. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. If a barrel comes with the feed ramps could I take them off? Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. Issues can arise when receivers and barrel extensions are mismatched. 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. There is a picture of the various options, hopefully another poster can link them. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. 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. All uppers are assembled cleaned and tested before shipping. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. 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. You can post now and register later. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. Lol. They are better! 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. Remember less is more, little by little. Gun smith said , not head spaced properly. Create an account to follow your favorite communities and start taking part in conversations. Should not be too hard. Read Now. 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. The barrel blanks available are made from 416 Stainless Steel. I wouldn't be concerned at all with any wear after modifying an upper receiver. M16's fed pretty well before the M4 feed ramps were introduced. It's best to use rifle/rifle combo or M4/M4. It gives a longer ramp that is less steep into the chamber. 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've seen that pic, it is a good reference. Either way is good and both types work great with semi auto only guns. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Sorta. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. M4 barrel to non M4 receiver is fine, but not the other way around. Only took a few minutes. Thats true overall and good to keep in mind. 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 will attest that a rifle upper and a barrel with the M4 feedramps works just fine. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. Share it in the comments section. The parts are interchangeable. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. M4 feed ramps will extend the barrel extension and the upper receiver. 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. I had seen these pix years ago and dismissed the idea of mix and match. Barrel customizations are also available. - The Shooter's Log, 2012 SHOT Show Special Report: Daniel Defense DDM4 V5 in .300 Blackout and a Factory SBR - The Shooter's Log, 2012 SHOT Show Special Report: SOG Armory Predator Rifle - The Shooter's Log, Surefire's 100-Round MAG5-100: The Highest Capacity AR-15 Magazine - The Shooter's Log, Throwback Thursday: Taurus Judge Range Report, ATI Milsport SGA 410 All the Advantages of an AR in .410, Ruger SR1911 LW Commander The Lightweight .45 ACP, Rifle Hack: Sighting for 100 Yards at a Distance of 25 Yards, Throwback Thursday: All About Bullet Grain. I built the upper using a Mega upper with a Compass Lake 18" barrel. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? Its also recommended you polish the ramps once youve achieved the appropriate angle. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. Reliability is the main concern for me when I re-barrel this rifle. 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. Is it worth the extra 50 bucks?" I have a non ramped barrel in a ramped upper, feeds fine. So I'm working on my first build, and I'm a little confused. The barrel is supposed to have the M4 feed ramps. Went back to the sellers website and found I was not the only one with problems. 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. 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 think your mistaking that with adding ramps to the receiver. Try this little exercise: 1. 4. The first reason is that they are, indeed, better. Not all mil-spec features advertised on the product information are the real mil-specs. The difference between standard feed ramps and M4 ramps is easy to see. 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. All comments are held for moderation and will appear after approval. 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 what does it do?? The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. 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). 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. Site towers are not "F" marked SPECS: Length- 14.5". 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. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! Edited April 27, 2014 by Mark Gale I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. All Rights Reserved. They . Sent back again. All we do is dremmel it to match - we dont remove it and grind to any specific angle. 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. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. I like getting another Upper idea then you could end up with two rifles! Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. The rifle-platform M16s dont use them. They were not intended to be super long range man killers. Use this M4 Barrel extention with M4 feedramps. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. aaargh.. that's the setup I hate to see. Get The Best Trigger Pull Gauges To Make Every Shot Count. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. This can lead to a rare but odd situation; barrel and receiver mismatch. There are several, but Steve and the guys at ADCO in OH are one such option (they use the Dremel method, but they do it right as I have seen several first-hand examples of their work and its performance after the fact). For a better experience, please enable JavaScript in your browser before proceeding. 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. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. What is the difference between Modern, Performance, and Premium Series Barrels? Press J to jump to the feed. Please be respectful of others. It's an interesting question. It's best to use rifle/rifle combo or M4/M4. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. It's going to a gunsmith to be shortened and rethreaded anyways, can they just grind/polish the feed ramps to match or is it more involved than that? M16s and M16-A1s run at 750 rounds per minute in full auto. All Rights Reserved. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. Here you can see an upper with "rifle" feedramps. Your previous content has been restored. 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Factory said its fine . which is basicallly an m16a1 cut down. Which Model Colt 1911 is For Me? M4 can better explain their benefit, although they help with more reliable feeding. In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. A4 Complete Upper Receiver. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Thanks! Good call. If you have an account, sign in now to post with your account. 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 The mil actually only specs M4 feed ramps for use in its M4s. 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 . So, I had purchased a 458 upper. 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. I use it for hunting dogs only. Barrel, sight and trigger work on most pistols and shotguns.