adding m4 feed ramps to barrel

So, what youre saying is that an M16 upper (not M4 cut) will work with either barrel, but an M4 cut upper will only work with an M4 cut barrel. I'll probably build a pistol out of this one. M16s and M16-A1s run at 750 rounds per minute in full auto. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. The rifle-platform M16s dont use them. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. These units actually feature the NON-F-Marked (correct) front sight base. Looking For Bear Creek Arsenal Barrels Review? well.. it's kinda hard to get stuff in this part of the world. I had seen these pix years ago and dismissed the idea of mix and match. 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? You need to match up barrels to receivers for optimum performance. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. FFL Fax: 866-721-8691. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. 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. Feed ramps being m4 or. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. Also, barrel life is relative. If a barrel comes with the feed ramps could I take them off? Your previous content has been restored. They are better! LanceRiley, Full M4 feed ramps start on the upper and continue onto the barrel extension. So I'm working on my first build, and I'm a little confused. 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. FN AR-15 5.56X45mm Nato . aaargh.. that's the setup I hate to see. *Must have a registered ARFCOM account to win. which is bad combo. Semi autos run slower than full autos. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Your link has been automatically embedded. So I called. The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. 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. Our 6.5 Grendel Black Nitride rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy at a great price. 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. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. 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. If this is your first visit, be sure to The ramps on the regular rifle-type extension are cut just to the edge of the extension. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. I picked up a side charging upper from Sundevil last year. The last is using the best and right ammo for the job. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. Here's some info from Randall Rauch aka www.ar15barrels.com, if your barrel extension has M4 ramps you should have an upper receiver also with the ramps. Use this M4 Barrel extention with M4 feedramps. The leading cause that leads to the development of the M4 feed ramp is the gas pressure from the carbine gas system that is increasing along with a high cyclic rate. . 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. Man, its crazy how many of yall have absolutely no idea why you do what you do. A forum community dedicated to drag racing drivers and enthusiasts. 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! 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. Then the manufacturer discontinued the barrel. 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-. And that is the important thing! This is a big tip, by the way, for pistol-caliber ARs. 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 Your email address will not be published. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. The manufacturer said they had sold hundreds of barrels with out problems reported. 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. 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. $101.95. 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. 1 is a standard and the other for use with m4 feed ramp barrels. can you buy feed ramps individually? That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. He had more to say and added some more engineer and gun designer speak too. 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. 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. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. I can still use the combination. So, an M4 feed ramp includes the barrel extension and the upper. Reliability is the main concern for me when I re-barrel this rifle. For new construction barrels only. Good call. Damaged Ak front end Barrel in Trunnion with or without sight bases. 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. I think your mistaking that with adding ramps to the receiver. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. M4 Barrel Extension (M4 Feedramps) $22.95 (4 reviews) SKU: Barrel-Extension-M4 Stock Status: Quantity: Add to Wish List Description For your AR15, M16, M4. I just need a little guidance on this and I'm having trouble getting good results from Google. I notice that's a Gibbz (or Gibbz-type) upper. 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 . Create an account to follow your favorite communities and start taking part in conversations. But, as with anything else, this work can go too far. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. colt A1E1 733 uppers didn't have extended carbine feedramps ? Recommend using a gunsmith this route too if you are not comfortable. The Fora platform includes forum software by XenForo. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. I should have taken my own advice for once. Earlfillmore 13 hr. Which Model Colt 1911 is For Me? M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. Thanks. They . Clear editor. 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. This 20" BCM barrel is machined from SS410 stainless steel. 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. 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 I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. Again, youll find plenty of videos on spooling up hand grinders to remedy feed ramp and ejection port issues with these larger cartridges, but I strongly suggest going factory-done aftermarket. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. By The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. 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. Editors Note: This article was originally published in January of 2019. All Rights Reserved. pictures would help. 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. Please be respectful of others. If you ever have an issue, then look at getting a correct barrel for the upper. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. Notice how the ramp starts on the barrel extension and not in the receiver. Gas block area is .750 diameter. 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. The first reason is that they are, indeed, better. What is an m4 feed ramp? Bullets tend to bump, snag, and stub on these guns. Thread: Adding M4 feedramps to A1/C7 upper. Avoid Polishing Too Lightly Or Too Roughly Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. 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'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. Should not be too hard. I got my help from this thread, and thank you again to ORD. The photo shows the dents and the bolt lugs line up perfectly. Site towers are not "F" marked SPECS: Length- 14.5". Full M4 feed ramps start on the upper and continue onto the barrel extension. 4. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. 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. Press J to jump to the feed. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. After two months of back and forth, cleaned up the feed ramps. So, I had purchased a 458 upper. 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. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. Jams and misfires. Add 3% to the total cost for credit card purchases. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. "C" stamp and CAGE code available. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. If I was concerned with precision, I would seek out parts from well-known gun makers and customizers Baer comes to mind, Hart barrels, etc etc. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. A couple of times I ended up with the OK set up from the picture above. You absolutely do not want it the other way around however. I read in Bravo company that there are 2 kinds of flat top upper. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Some suggest taking a grinder to the extension area. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! Copyright 2016 - 2023 by AdventureFootstep.com. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. First of Im not a gunsmith or firearms professional. Powered by Invision Community. can the barrel extension be bought individualy? 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'm a machinist in the aerospace industry and lucky enough to have unrestricted access to a really nice machine shop so the modification from rifle to M4 feed ramps is no sweat, I've done it once before a few years back with a .250" carbide cutter in the mill for a friend and it came out looking indistinguishable from a true M4 extension. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. -The Barrel MUST be removed from the Upper Receiver in order to use this Kit.-Never cut or polish the aluminum M4 Feed Ramps in your upper receiver! Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Just put it in and shoot it. For use by barrel manufacturers. 2. You are using an out of date browser. Another reason is that any commercial receiver and parts makers want to tool up to make upper receivers and barrel extensions, especially when shorter guns are becoming more popular. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. and add them to non-m4 barrels.? 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. Its also recommended you polish the ramps once youve achieved the appropriate angle. Interesting reading. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. Thanks for explaining the feed ramp topic in a couple of different ways. I checked what I have now. Edited April 27, 2014 by Mark Gale I have a non ramped barrel in a ramped upper, feeds fine. You cannot paste images directly. It is milled out of 6061 T6. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Required fields are marked *. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. - 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 have the rifle barrel. 3. They were not intended to be super long range man killers. Upload or insert images from URL. 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. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. However, they do have M4 feed-ramps which is not clone correct. 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. 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 I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. My alternative plan is to do exactly as you describe. 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 dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. No feed ramps. 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. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? 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. Metal cases ammunition such as Wolf through an M4 clone? If you consider this article useful, share it with anyone in need! That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. All Rights Reserved. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. We want you, our readers, to be able to make informed decisions. 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. As they are becoming more and more a standard, and certainly do not do any harm to us. Only took a few minutes. 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). AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Change the angle so that the ramp ends at the exact same point. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. If you have an account, sign in now to post with your account. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . Create an account to follow your favorite communities and start taking part in conversations. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. You can post now and register later. 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. Whether they materialize or not depends on the direction of the mismatch. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps It's near impossible to replace the carry handle upper I have these days, and finding a colt chrome lined 20" light weight barrel isn't a walk in the park either. Some argue that, factually, its a step to enable a smoother feeding. All Rights Reserved. M4 Feed ramps on barrel extensions are a solid example. upper recievers and barrels are hard to comeby. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. 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. 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. Here you can see an upper with "rifle" feedramps. 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. Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. AR9 - Help diagnosing feeding issue. So the engineers lowered the feed rampa into the receiver. 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. 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). 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. Caught a deal on a matched barrel and bolt. Modern Series Barrels. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . 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. It may not display this or other websites correctly. Most work performed while-you-wait, evening and saturday appointments available. Mil-spec is good for the masses, and if you want the job done it is a great start. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. 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.

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