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. This can lead to a rare but odd situation; barrel and receiver mismatch. I'll probably build a pistol out of this one. Use this M4 Barrel extention with M4 feedramps. 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. Thats why AR10s- And Scar heavies exist for. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. I didnt think anything about it having M4 feed ramps. 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. JavaScript is disabled. Thread: Adding M4 feedramps to A1/C7 upper. So, lets glide down these lines below to erase your misconceptions about them. This is one time it's better to go a little too far than to leave an edge for the . A forum community dedicated to drag racing drivers and enthusiasts. I like getting another Upper idea then you could end up with two rifles! BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. The barrels also had to be modified. 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. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. 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. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. 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 Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. A feed ramp is a basic feature of many breech loading cartridge firearm designs. 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. I've seen that pic, it is a good reference. In short, if you have a Dremmel you can do it yourself. What is the difference between Modern, Performance, and Premium Series Barrels? Proper maintenance and lubrication. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. Then the manufacturer discontinued the barrel. I like all my guns to be reliable. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 A couple of times I ended up with the OK set up from the picture above. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. By Yamil Sued August 6, 2021. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas If you have an account, sign in now to post with your account. 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. All we do is dremmel it to match - we dont remove it and grind to any specific angle. This 20" BCM barrel is machined from SS410 stainless steel. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. It's an interesting question. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. As they are becoming more and more a standard, and certainly do not do any harm to us. 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 found the article very informative. I'm a machinist in the aerospace industry and lucky enough to have. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. After two months of back and forth, cleaned up the feed ramps. So, I had purchased a 458 upper. 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. Copyright 1996-2023 AR15.COM LLC. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. Notice how the ramp starts on the barrel extension and not in the receiver. This is a big tip, by the way, for pistol-caliber ARs. 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. Press question mark to learn the rest of the keyboard shortcuts. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. Standard vs M4 Feed Ramps, what's the difference #1056 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. Metal cases ammunition such as Wolf through an M4 clone? 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. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. 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. The best case is to have both an upper and barrel that have the feed ramps. Go slow and you'll be done in no time. I cant advise on that one folks. 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. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. If a barrel comes with the feed ramps could I take them off? Full M4 feed ramps start on the upper and continue onto the barrel extension. Feels like a silly question now that it makes sense. True, which is why they're not even needed in semi autos. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? The Differences Between an M4 and an AR15 - Music Raiser It's best to use rifle/rifle combo or M4/M4. It's best to use rifle/rifle combo or M4/M4. 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. By I think your mistaking that with adding ramps to the receiver. can you buy feed ramps individually? I read in Bravo company that there are 2 kinds of flat top upper. which is bad combo. 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. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. Only took a few minutes. I prefer them. He had more to say and added some more engineer and gun designer speak too. They . 5. As suggested, its best to match the upper and barrel extension no worries that way. 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. 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). AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. "C" stamp and CAGE code available. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. I will check with compass lake. However Ive built numerous ar15 and lr308 rifles and pistols. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. So, an M4 feed ramp includes the barrel extension and the upper. The first reason is that they are, indeed, better. If you ever have an issue, then look at getting a correct barrel for the upper. The reason I decided to write about this topic at all was because there are some mil-spec features advertised on aftermarket parts that arent even really mil-spec. The extension is the part at the end of the barrel that fits inside the upper. Press J to jump to the feed. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. #2. April 23, 2014 in Rifle - Technical. This has been my concern with modifying the aluminum parts. Modify AR15 A2 barrel extension for M4 feed ramp? Whether they materialize or not depends on the direction of the mismatch. 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! . 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. [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 I picked up a side charging upper from Sundevil last year. BrianEnos.com pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. However, they do have M4 feed-ramps which is not clone correct. Powered by Invision Community. 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. Change the angle so that the ramp ends at the exact same point. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. When you need to nail something you use a hammer not a wrench. Feed ramps being m4 or. PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist FFL Fax: 866-721-8691. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. 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. Little polish. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. I'm assuming that you only need the ramps from one or the other. Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. Add 3% to the total cost for credit card purchases. Do you have an AR barrel or feed ramp tip? I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. It's best to have M4 ramps on both the upper and barrel. You also repeated yourself. You have a rifle barrel. It is removeable with a special wrench and a barrel clamp/vise. RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. LanceRiley, 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. 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. Previous. Reddit and its partners use cookies and similar technologies to provide you with a better experience. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. 1 is a standard and the other for use with m4 feed ramp barrels. Avoid Polishing Too Lightly Or Too Roughly That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Its also recommended you polish the ramps once youve achieved the appropriate angle. Pasted as rich text. First of Im not a gunsmith or firearms professional. ago KrinkyDink2 9 hr. Barrel FAQs | Ballistic Advantage You have the option of barrel type, thread, fluting, finish type and to add a match bolt. Cutting M4 feed ramps - Calguns.net You need to match up barrels to receivers for optimum performance. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. Is getting it as part of the upper better? We have four combinations here: check out the. 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. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. M16's fed pretty well before the M4 feed ramps were introduced. Adding M4 feedramps to A1/C7 upper - M4Carbine.net Go back to writing school. AR-15 Barrel Extension Question - Sniper's Hide Forum The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. Thanks! I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces Getting the AR Barrel and Receiver Configuration Correct M4 feed ramp barrel in a non M4 ramp upper - AR15.COM I built the upper using a Mega upper with a Compass Lake 18" barrel. Sent back again. The ramps are in the barrel extension. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. What is an m4 feed ramp? Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. I can still use the combination. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). You can post now and register later. Amazing what happens in a thread over a simple question. May 17, 2008 in The Armorer. DoubleStar M4 clone opinions | Survivalist Forum I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. I should have taken my own advice for once. Should M4 feed ramps come with the barrel or upper? : r/ar15 - reddit "A Bad Day At The Range Is Better Than A Great Day Working". is the m4 feedramp common in barrel extensions? 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.
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