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. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. Metal cases ammunition such as Wolf through an M4 clone? AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Factory said its fine . Reddit and its partners use cookies and similar technologies to provide you with a better experience. Create an account to follow your favorite communities and start taking part in conversations. M4-style barrel extension with Rifle-type upper - Rifle - Technical document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. Your link has been automatically embedded. So, an M4 feed ramp includes the barrel extension and the upper. I like getting another Upper idea then you could end up with two rifles! Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. $101.95. Upper Receiver, A4, Flat Top, USGI, Numbered, AR-Stoner Upper Receiver Stripped AR-15 A3 Flat-Top Matte, Black River Tactical 16 Cold Hammer Forged Optimum Barrel Accuracy Evaluation. 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. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. Issues can arise when receivers and barrel extensions are mismatched. The difference between standard feed ramps and M4 ramps is easy to see. 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. Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. well.. it's kinda hard to get stuff in this part of the world. Gas block area is .750 diameter. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. . M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. 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. This is one time it's better to go a little too far than to leave an edge for the . They guide the bullet up and into the chamber. You must log in or register to reply here. We want you, our readers, to be able to make informed decisions. 50 bucks one way or the other on the barrel ain't squat! Polishing the edges of the chamber mouth to remove the edges of that chamfer will. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. 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. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Just put it in and shoot it. 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? The tip of the cartridge rarely comes into contact with the upper receiver. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. 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. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. In most cases the ramps only help during full auto mode while cycling at a high rate. 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. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. May 17, 2008 in The Armorer. Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist Only took a few minutes. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. 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. There is a picture of the various options, hopefully another poster can link them. First of Im not a gunsmith or firearms professional. - 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. It is removeable with a special wrench and a barrel clamp/vise. Sent back again. PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. I'm assuming that you only need the ramps from one or the other. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. Pasted as rich text. Whether they materialize or not depends on the direction of the mismatch. There's a 7 degree difference between standard and M4 ramps. "C" stamp and CAGE code available. I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. All Rights Reserved. Seems M4 is all the rage these days. Barrel, sight and trigger work on most pistols and shotguns. LanceRiley, Good call. Some argue that, factually, its a step to enable a smoother feeding. Theres a bit more to it than just polishing. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. Thanks. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. M4 feed ramp barrel in a non M4 ramp upper - AR15.COM Full M4 feed ramps start on the upper and continue onto the barrel extension. Share it in the comments section. By Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells Its not a big deal but still an important thing to remember and understand. 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. We have four combinations here: The parts are interchangeable. 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. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Thats true overall and good to keep in mind. Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. 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. 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. Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. Finding the proper upper receiver is your best option. Don't forget read more information about it here! Home Firearms Figuring Out Feed Ramps. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper 30 cal. 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. The barrel is supposed to have the M4 feed ramps. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! M4 Feed ramps on barrel extensions are a solid example. Looking For Bear Creek Arsenal Barrels Review? 4. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . 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. m4 feed ramps - The Armorer - AR15Armory.com Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. 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. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. So, I had purchased a 458 upper. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just Reddit and its partners use cookies and similar technologies to provide you with a better experience. Should M4 feed ramps come with the barrel or upper? : r/ar15 - reddit 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. 6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas Barrel FAQs | Ballistic Advantage Guess what? Copyright 1996-2023 AR15.COM LLC. The extension is the part at the end of the barrel that fits inside the upper. Rifle vs m4 feed ramps - AR15.COM In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. Either way is good and both types work great with semi auto only guns. No Feed Ramps on upper? - General Discussion - 308AR.com Community The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. So, what is the difference between M4 feed ramps and regular ones? That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. Get The Best Trigger Pull Gauges To Make Every Shot Count. One new winner* is announced every week! It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. I built the upper using a Mega upper with a Compass Lake 18" barrel. 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. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. 2. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC Thats why AR10s- And Scar heavies exist for. However, they do have M4 feed-ramps which is not clone correct. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. 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 . 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. AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM Shorter length equates to much higher pressure in the upper receiver. And that is the important thing! Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . can the barrel extension be bought individualy? All we do is dremmel it to match - we dont remove it and grind to any specific angle. M4 barrel to non M4 receiver is fine, but not the other way around. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. Description. ago KrinkyDink2 9 hr. I just need a little guidance on this and I'm having trouble getting good results from Google. 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. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. 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). It may not display this or other websites correctly. FFL Fax: 866-721-8691. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. Little polish. Press J to jump to the feed. You will be able to leave a comment after signing in, AR15Armory.com Does anyone have a follow up that confirms or denies my claim? If you ever have an issue, then look at getting a correct barrel for the upper. However, if youre wanting to rebarrel a non-M4-cut upper with an M4 feed-ramp equipped barrel, or going the other direction: you have a new upper thats been relieved to fit with the M4 ramps, and a non-M4-cut barrel extension, and that wont work! That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. 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. if you are OK with 3MOA, you might go 20,000 rounds! I will check with compass lake. 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. M4 M-4 Feed Ramp Jam with 55 gr grain Bullets, Solution, Fix, AR15 AR-15 Stuck Cartridge iowaunemployment 21K views 10 years ago Comparing AR15 barrels -Faxon vs. Bear Creek arsenal-. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. This can lead to a rare but odd situation; barrel and receiver mismatch. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. CARBON-15 Stripped Lower Receiver Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? 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). Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? 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've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. As they are becoming more and more a standard, and certainly do not do any harm to us. What's the difference? If you have an account, sign in now to post with your account. By 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. I'm a machinist in the aerospace industry and lucky enough to have. 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. But, as with anything else, this work can go too far. The ramps are in the barrel extension. Lol. #2. Required fields are marked *. instead of mil-spec. I prefer them. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE 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. Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist . Barrel Length: 16" Barrel Material: 4150V Chrome Moly Vanadium Steel Barrel Finish: Phosphate Barrel Profile: M4 Chamber: 5.56 NATO Twist Rate: 1 in 7" Extension: M4 Gas System: Carbine-Length Gas Block Type: Low Profile .750" Diameter Upper Receiver: Forged 7075 T6 Aluminum Receiver Style: M4 Flat top with feed ramps Receiver Finish: Hardcoat Anodized M16's fed pretty well before the M4 feed ramps were introduced. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. Either way is good and both types work great with semi auto only guns. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. colt A1E1 733 uppers didn't have extended carbine feedramps ? The barrel extension and the receiver both have to have the cuts. Feed ramps being m4 or. Please be respectful of others. The barrel blanks available are made from 416 Stainless Steel. Powered by Invision Community. Is one better than the other? So I called. Amazing what happens in a thread over a simple question. Reliability is the main concern for me when I re-barrel this rifle. Any use of this content without express written consent is prohibited. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. Both. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. Remember less is more, little by little. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. 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. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. You absolutely do not want it the other way around however. They were not intended to be super long range man killers. Went back to the sellers website and found I was not the only one with problems. 2. 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. 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. 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. My alternative plan is to do exactly as you describe. 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). Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. You cannot paste images directly. Using an upper with M4 feed ramps with a barrel that does not have them will lead to feed problems as it creates a ledge/lip that can catch the bullet tip as it tries to feed. 3. Edited April 27, 2014 by Mark Gale Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Damaged Ak front end Barrel in Trunnion with or without sight bases. I picked up a side charging upper from Sundevil last year. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Any use of this content without express written consent is prohibited. Upload or insert images from URL. practical_man Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. 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. So, an M4 feed ramp includes the barrel extension and the upper. Jams and misfires. Do you have an AR barrel or feed ramp tip? PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. Does NOT include pin Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. True, which is why they're not even needed in semi autos. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle The barrel Throat is the second most critical component after angles and should be polished with utmost care. M4 can better explain their benefit, although they help with more reliable feeding. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. Bullets tend to bump, snag, and stub on these guns. 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. All NFA rules apply. All uppers are assembled cleaned and tested before shipping. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . 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.