Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Only took a few minutes. 30 cal. 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. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. Rifle vs m4 feed ramps - AR15.COM What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. We have four combinations here: Then the manufacturer discontinued the barrel. The Fora platform includes forum software by XenForo. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. 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. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. Married pretty well with my Seekins machined lower. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. Some, me included, have said that the M4 ramps are a help to some of the larger-diameter cartridges in use, such as 6.5 Grendel or .22 Nosler. 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. April 23, 2014 in Rifle - Technical. EDIT: Okay, I understand now! aaargh.. that's the setup I hate to see. Any use of this content without express written consent is prohibited. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. I just need a little guidance on this and I'm having trouble getting good results from Google. Press J to jump to the feed. The rifle-platform M16s dont use them. 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. BrianEnos.com 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. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Experts advise on 31 degrees+30 minus-zip. The mil actually only specs M4 feed ramps for use in its M4s. The barrel Throat is the second most critical component after angles and should be polished with utmost care. Avoid Polishing Too Lightly Or Too Roughly May 17, 2008 in The Armorer. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. The barrels also had to be modified. First, the M4 barrel and non-M4 upper isnt likely to cause issues, but due to the relief cut on an M4-spec upper, there will be a gap that works like an edge that most definitely can snag the bullet and stub the round. SKU: BCM-URG-M4-16 Features: M4 Feed Ramp Barrel Extension Caliber: 5.56 NATO Barrel Length: 16in Barrel Style: Standard Handguard: None BCM M4 Handguards (Double Heat Shield) - Black + $15.00 PKMR (Polymer KeyMod Rail) Carbine Length - Black + $24.95 PKMR (Polymer KeyMod Rail) Carbine Length - Flat Dark Earth + $24.95 Stock Status: Out of stock Ready to drop onto a complete lower receiver. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. Which Model Colt 1911 is For Me? M4 Feedramps - AR-15 Pro Create an account to follow your favorite communities and start taking part in conversations. It's best to have M4 ramps on both the upper and barrel. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Whether they materialize or not depends on the direction of the mismatch. Powered by Invision Community. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? 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. 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). Shorter length equates to much higher pressure in the upper receiver. By They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Share it in the comments section. I can still use the combination. 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. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. DoubleStar M4 clone opinions | Survivalist Forum Factory said its fine . This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. Create an account to follow your favorite communities and start taking part in conversations. All uppers are assembled cleaned and tested before shipping. A forum community dedicated to drag racing drivers and enthusiasts. Some suggest taking a grinder to the extension area. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . 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. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Press J to jump to the feed. First of Im not a gunsmith or firearms professional. Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist 5. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE 308 m5 using m4 feed ramps, which I belive are for the smaller round like. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. 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. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. I like getting another Upper idea then you could end up with two rifles! My alternative plan is to do exactly as you describe. All comments are held for moderation and will appear after approval. You absolutely do not want it the other way around however. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. Semi autos run slower than full autos. There is a picture of the various options, hopefully another poster can link them. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? 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. I prefer them. 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? Does NOT include pin 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. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull The manufacturer said they had sold hundreds of barrels with out problems reported. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. You wrote that much to make a point that should have taken about 100 words? 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. . Thanks for explaining the feed ramp topic in a couple of different ways. FN AR-15 5.56X45mm Nato . DSA has fat top, Mueller, non feed ramp uppers for $40. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. It may not display this or other websites correctly. -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! Both. And it appears that the bolt is slamming into the top of the bullet. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. which is basicallly an m16a1 cut down. And that is the important thing! So I'm working on my first build, and I'm a little confused. Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. 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? All Rights Reserved. I can probably get the upper reciever first. FN AR15 barrels are hammer forged using the same proprietary high-grade Chrome Moly Vanadium steel used in FN's venerable machinegun barrels produced to handle the punishment of . 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. They were not intended to be super long range man killers. But, as with anything else, this work can go too far. 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. Sent back again. I notice that's a Gibbz (or Gibbz-type) upper. 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. The tip of the cartridge rarely comes into contact with the upper receiver. Went back to the sellers website and found I was not the only one with problems. AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Please allow 5~10 days for assembly and testing before ship date. 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. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. and add them to non-m4 barrels.? This can lead to a rare but odd situation; barrel and receiver mismatch. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. How to Polish a Feedramp Quick and Easy | Firearms Talk How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. In short, if you have a Dremmel you can do it yourself. Please be respectful of others. Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum 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. Description. M4 Feed ramps on barrel extensions are a solid example. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Forged 7075-T6 aluminum is harder than a bulls balls. Questions on how to install your new BA barrel? Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. Feed ramp - Wikipedia Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. 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. 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? Any use of this content without express written consent is prohibited. 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). Guess what? what does it do?? A couple of times I ended up with the OK set up from the picture above. The extension is the part at the end of the barrel that fits inside the upper. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. Edited April 27, 2014 by Mark Gale Anodized red parts. Feeds flawlessly. How to Clone the M16A2 Rifle - The New Rifleman Mil-spec is good for the masses, and if you want the job done it is a great start. 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? Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. The Differences Between an M4 and an AR15 - Music Raiser 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. There's a 7 degree difference between standard and M4 ramps. If you ever have an issue, then look at getting a correct barrel for the upper. A feed ramp is a basic feature of many breech loading cartridge firearm designs. 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. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. Notice how the ramp starts on the barrel extension and not in the receiver. The Mission of Cheaper Than Dirt! 2. Should not be too hard. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. 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. Looking For Bear Creek Arsenal Barrels Review? 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 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). All things being equal and having used both weapons extensively, Id rather have the feed Ramps. When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. They . I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. All Rights Reserved. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. 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. The M4 was the first (allegedy) carbine length gas system. AR9 - Help diagnosing feeding issue - Calguns.net Feed Ramps -300BlkTalk Ideally both. Press question mark to learn the rest of the keyboard shortcuts. However Ive built numerous ar15 and lr308 rifles and pistols. 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. 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. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Amazing what happens in a thread over a simple question. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. 6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas Good call. Go back to writing school. 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! The barrel is supposed to have the M4 feed ramps. You need to match up barrels to receivers for optimum performance. I suggest you get a rifle receiver. 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-. I built the upper using a Mega upper with a Compass Lake 18" barrel. I guess it depends on what your relationship to the necessary shop activities is. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. By Yamil Sued August 6, 2021. 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.) . For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. 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. Just because you can, doesn't mean you should. So I called. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. I have a non ramped barrel in a ramped upper, feeds fine. 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. If I can correct an issue before it's an issue that is preferred. Required fields are marked *. For new construction barrels only. Either way is good and both types work great with semi auto only guns. 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 extension and the receiver both have to have the cuts. M16's fed pretty well before the M4 feed ramps were introduced. 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. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. 2. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . It is milled out of 6061 T6. 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. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. 3. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. In most cases the ramps only help during full auto mode while cycling at a high rate. 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. AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums It gives a longer ramp that is less steep into the chamber. if you are OK with 3MOA, you might go 20,000 rounds! [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 M16s and M16-A1s run at 750 rounds per minute in full auto. Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist 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. All Rights Reserved. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. can you buy feed ramps individually? Feed ramps on barrel extensions are a good example. Cutting M4 feed ramps - Calguns.net I can assure you that most mods that deviate from the original design aren't 100% reliable. Get The Best Trigger Pull Gauges To Make Every Shot Count. Dec 17, 2020. 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. Copyright 1996-2023 AR15.COM LLC. So, lets glide down these lines below to erase your misconceptions about them. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? Clear editor. 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. All we do is dremmel it to match - we dont remove it and grind to any specific angle. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Theres a bit more to it than just polishing. Thats true overall and good to keep in mind. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. CUTTING M4 RAMPS - YouTube . BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. AR9 - Help diagnosing feeding issue. Brevity matters. 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. Full M4 feed ramps start on the upper and continue onto the barrel extension. 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. M4 can better explain their benefit, although they help with more reliable feeding. Barrel FAQs | Ballistic Advantage I'm assuming that you only need the ramps from one or the other. Display as a link instead, 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. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. 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. Use this M4 Barrel extention with M4 feedramps. This 20" BCM barrel is machined from SS410 stainless steel. ago KrinkyDink2 9 hr. If you aren't 110% comfortable with doing the job, and you do not have all the tools and equipment to do it properly, then have a smith do it for you. After two months of back and forth, cleaned up the feed ramps. Is it worth the extra 50 bucks?" 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 Reddit and its partners use cookies and similar technologies to provide you with a better experience. I'll probably build a pistol out of this one. AR-15 Feed Ramp Problems - School of the American Rifle "A Bad Day At The Range Is Better Than A Great Day Working". Finding the proper upper receiver is your best option. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. You cannot paste images directly. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. You have a rifle barrel. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. 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!
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