Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. The M4 was the first (allegedy) carbine length gas system. A couple of times I ended up with the OK set up from the picture above. 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.) . I think your mistaking that with adding ramps to the receiver. Some argue that, factually, its a step to enable a smoother feeding. 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. "It will last 5k rounds instead of 4k. and add them to non-m4 barrels.? This is a big tip, by the way, for pistol-caliber ARs. Reddit and its partners use cookies and similar technologies to provide you with a better experience. is the m4 feedramp common in barrel extensions? Create an account to follow your favorite communities and start taking part in conversations. M4-style barrel extension with Rifle-type upper - Rifle - Technical Watch a video about our Modern Series AR barrel: Is it worth the extra 50 bucks?" 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. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M check out the. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. If you ever have an issue, then look at getting a correct barrel for the upper. It's an interesting question. I cant advise on that one folks. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. So, an M4 feed ramp includes the barrel extension and the upper. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. Your email address will not be published. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. Mil-spec is good for the masses, and if you want the job done it is a great start. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. The Differences Between an M4 and an AR15 - Music Raiser One new winner* is announced every week! 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. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Lol. Either way is good and both types work great with semi auto only guns. 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. . M4 Barrel Extension (M4 Feedramps) - Bravo Company USA While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. After two months of back and forth, cleaned up the feed ramps. Proper maintenance and lubrication. *Must have a registered ARFCOM account to win. Its also recommended you polish the ramps once youve achieved the appropriate angle. You absolutely do not want it the other way around however. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. 1 is a standard and the other for use with m4 feed ramp barrels. I like all my guns to be reliable. 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? Semi autos run slower than full autos. 2. Share it in the comments section. I can assure you that most mods that deviate from the original design aren't 100% reliable. Thank you for answering the question do well. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? Getting the AR Barrel and Receiver Configuration Correct Bullets tend to bump, snag, and stub on these guns. Edited April 27, 2014 by Mark Gale Any use of this content without express written consent is prohibited. 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. Paste as plain text instead, well.. it's kinda hard to get stuff in this part of the world. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. 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. So, what is the difference between M4 feed ramps and regular ones? By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Ideally both. One new winner* is announced every week! I too built a .458 SOCOM carbine . Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. Upload or insert images from URL. Don't forget read more information about it here! so im thinking I might as well just get the unramp upper. This has been my concern with modifying the aluminum parts. I found the article very informative. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. Married pretty well with my Seekins machined lower. For a better experience, please enable JavaScript in your browser before proceeding. True, which is why they're not even needed in semi autos. And that is the important thing! This is one time it's better to go a little too far than to leave an edge for the . Being a Newbie AR owner ((Ive been an avid gun owner for nearly 50 years), I appreciate the information and visual aids that Im sure will be a big help in enjoying and using this gun platform. It was in the last few issues of SAR. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. Barrel customizations are also available. 3. Little polish. 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. 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. The barrel Throat is the second most critical component after angles and should be polished with utmost care. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. 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. Do you have an AR barrel or feed ramp tip? I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. 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. 's blog. Go back to writing school. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. 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. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. 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. again, Thanks. 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. Thread: Adding M4 feedramps to A1/C7 upper. Only took a few minutes. Factory said its fine . So I called. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Full M4 feed ramps start on the upper and continue onto the barrel extension. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? I had seen these pix years ago and dismissed the idea of mix and match. Full M4 feed ramps start on the upper and continue onto the barrel extension. colt A1E1 733 uppers didn't have extended carbine feedramps ? Copyright 1996-2023 AR15.COM LLC. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. In short, if you have a Dremmel you can do it yourself. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. upper recievers and barrels are hard to comeby. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. Press question mark to learn the rest of the keyboard shortcuts. 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 Feed ramps on barrel extensions are a solid example. Then the manufacturer discontinued the barrel. Description. Only took a few minutes. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. Barrel FAQs | Ballistic Advantage Making a non M4 feed ramp barrel work in an M4 feed ramp upper. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. 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. The barrel is supposed to have the M4 feed ramps. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. What is an m4 feed ramp? Polishing the edges of the chamber mouth to remove the edges of that chamfer will. Rifle vs m4 feed ramps - AR15.COM Get The Best Trigger Pull Gauges To Make Every Shot Count. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. A feed ramp is a basic feature of many breech loading cartridge firearm designs. Either way is good and both types work great with semi auto only guns. "A Bad Day At The Range Is Better Than A Great Day Working". You will be able to leave a comment after signing in, AR15Armory.com The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. M4 ramps help in feeding in for carbine in full auto. 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. You are using an out of date browser. Please allow 5~10 days for assembly and testing before ship date. 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. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. Do you need an M4 feed ramp on your AR? Here is some info. M4 feed ramps will extend the barrel extension and the upper receiver. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. 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 Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. So, I had purchased a 458 upper. 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 only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) I prefer them. $101.95. I can still use the combination. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. The information provided here does not represent the views of Cheaper Than Dirt! I just need a little guidance on this and I'm having trouble getting good results from Google. My experience with ARs is all A-1s. The first reason is that they are, indeed, better. EDIT: Okay, I understand now! The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. 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. My alternative plan is to do exactly as you describe. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. LanceRiley, AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? 30 cal. Is getting it as part of the upper better? It's best to use rifle/rifle combo or M4/M4. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. Powered by Invision Community. You need to match up barrels to receivers for optimum performance. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. 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. However, they do have M4 feed-ramps which is not clone correct. How to Polish a Feedramp Quick and Easy | Firearms Talk For this test, I used a Colt upper with M4 feed ramps and a SOCOM heavy 14.5 barrel, just like what is used in the military. All uppers are assembled cleaned and tested before shipping. Reddit and its partners use cookies and similar technologies to provide you with a better experience. By Read Now. Just because you can, doesn't mean you should. 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. 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. Thanks! Any use of this content without express written consent is prohibited. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. 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 (theyre lowered). ago KrinkyDink2 9 hr. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. Please be respectful of others. 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 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). 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. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. The manufacturer said they had sold hundreds of barrels with out problems reported. The difference between standard feed ramps and M4 ramps is easy to see. pictures would help. You want them to match. So I'm working on my first build, and I'm a little confused. 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? If I can correct an issue before it's an issue that is preferred. The ramps are in the barrel extension. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. 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. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. FN AR-15 5.56X45mm Nato . I got my help from this thread, and thank you again to ORD. He had more to say and added some more engineer and gun designer speak too. Notice how the ramp starts on the barrel extension and not in the receiver. Sorta. What is the difference between Modern, Performance, and Premium Series Barrels? However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. #2. They guide the bullet up and into the chamber. PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces The barrels also had to be modified. Good call. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). Metal cases ammunition such as Wolf through an M4 clone? These units actually feature the NON-F-Marked (correct) front sight base. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. As they are becoming more and more a standard, and certainly do not do any harm to us. Feed ramp - Wikipedia I don't have much to add re: feed ramps, but. 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. So the engineers lowered the feed rampa into the receiver. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. I checked what I have now. Guess what? AR9 - Help diagnosing feeding issue - Calguns.net M4 barrel to non M4 receiver is fine, but not the other way around. The rifle-platform M16s dont use them. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. Your link has been automatically embedded. First of Im not a gunsmith or firearms professional. Whether they materialize or not depends on the direction of the mismatch. It's best to have M4 ramps on both the upper and barrel. CARBON-15 Stripped Lower Receiver The photo shows the dents and the bolt lugs line up perfectly. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells No feed ramps. M16s and M16-A1s run at 750 rounds per minute in full auto. You can post now and register later. Feed ramps on barrel extensions are a good example. Use this M4 Barrel extention with M4 feedramps. You also repeated yourself. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. The last is using the best and right ammo for the job. The Fora platform includes forum software by XenForo. 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.
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