I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. 4. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. For a better experience, please enable JavaScript in your browser before proceeding. I guess it depends on what your relationship to the necessary shop activities is. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. if you are OK with 3MOA, you might go 20,000 rounds! 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. Full M4 feed ramps start on the upper and continue onto the barrel extension. 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. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . 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. Powered by Invision Community. I just need a little guidance on this and I'm having trouble getting good results from Google. can you buy feed ramps individually? I have looked and looked and looked. Whether they materialize or not depends on the direction of the mismatch. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. . 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. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? which is basicallly an m16a1 cut down. 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. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. Interesting reading. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. Barrel customizations are also available. 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. The information provided here does not represent the views of Cheaper Than Dirt! Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. So the engineers lowered the feed rampa into the receiver. - 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. instead of mil-spec. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. upper recievers and barrels are hard to comeby. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. In most cases the ramps only help during full auto mode while cycling at a high rate. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. Paste as plain text instead, Display as a link instead, I read in Bravo company that there are 2 kinds of flat top upper. 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.) . Finding the proper upper receiver is your best option. You are using an out of date browser. 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. Brevity matters. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? 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. LanceRiley, If I can correct an issue before it's an issue that is preferred. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. #2. Factory said its fine . What's the difference? Dec 17, 2020. -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! 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. However, they do have M4 feed-ramps which is not clone correct. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. 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. This can lead to a rare but odd situation; barrel and receiver mismatch. What is the difference between Modern, Performance, and Premium Series Barrels? FN AR-15 5.56X45mm Nato . Lol. Is it worth the extra 50 bucks?" Metal cases ammunition such as Wolf through an M4 clone? 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. 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. As they are becoming more and more a standard, and certainly do not do any harm to us. Then you can get a regular rifle barrel for the upper with no ramps. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. Single Action and Double Action Which One Is Better For You? If a barrel comes with the feed ramps could I take them off? Share it in the comments section. When you need to nail something you use a hammer not a wrench. Thread: Adding M4 feedramps to A1/C7 upper. M4 ramps help in feeding in for carbine in full auto. 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 I called. The photo shows the dents and the bolt lugs line up perfectly. Go slow and you'll be done in no time. Site towers are not "F" marked SPECS: Length- 14.5". M4 Feed ramps on barrel extensions are a solid example. A forum community dedicated to drag racing drivers and enthusiasts. These units actually feature the NON-F-Marked (correct) front sight base. If you ever have an issue, then look at getting a correct barrel for the upper. 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. In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. Then the manufacturer discontinued the barrel. Is one better than the other? 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. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. Is getting it as part of the upper better? 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. Backing up a ton: Any and all AR-15 barrel extensions have 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. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. Forged 7075-T6 aluminum is harder than a bulls balls. A4 Complete Upper Receiver. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. i have the rifle barrel. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. I think your mistaking that with adding ramps to the receiver. No feed ramps. So, an M4 feed ramp includes the barrel extension and the upper. 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 found the article very informative. 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. 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. The mil actually only specs M4 feed ramps for use in its M4s. 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. 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. Sent back again. M4 feed ramps will extend the barrel extension and the upper receiver. Some suggest taking a grinder to the extension area. Full M4 feed ramps start on the upper and continue onto the barrel extension. So, I had purchased a 458 upper. Its also recommended you polish the ramps once youve achieved the appropriate angle. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. 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. 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. Guess what? Gas block area is .750 diameter. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. As suggested, its best to match the upper and barrel extension no worries that way. For new construction barrels only. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. What is an m4 feed ramp? Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. Gun smith said , not head spaced properly. 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. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. True, which is why they're not even needed in semi autos. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? However Ive built numerous ar15 and lr308 rifles and pistols. The barrel blanks available are made from 416 Stainless Steel. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? 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 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). When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Pasted as rich text. It is a tightly machined and polished piece of metal which guides a cartridge from the top of the magazine into the firing chamber of the barrel. You want them to match. Should not be too hard. Does anyone have a follow up that confirms or denies my claim? With a larger diameter case body sitting down in the magazine, the tip of the bullet sits lower in relation to the chamber/bore centerline than with a .223-size round. Thats why AR10s- And Scar heavies exist for. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. All Rights Reserved. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. The last is using the best and right ammo for the job. I wouldn't be concerned at all with any wear after modifying an upper receiver. 's blog. . Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. For use by barrel manufacturers. Get The Best Trigger Pull Gauges To Make Every Shot Count. 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. So, what is the difference between M4 feed ramps and regular ones? Not all mil-spec features advertised on the product information are the real mil-specs. I'd get jams from bullets hitting the back of the upper so I took a small round file and made the M4 ramps in the upper. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. DSA has fat top, Mueller, non feed ramp uppers for $40. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. Man, its crazy how many of yall have absolutely no idea why you do what you do. 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). And it appears that the bolt is slamming into the top of the bullet. You absolutely do not want it the other way around however. I'm a machinist in the aerospace industry and lucky enough to have. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Married pretty well with my Seekins machined lower. Upload or insert images from URL. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. 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. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. Having been in military supply, I know that what the mil-spec means: it gets the minimum job done for thousands (millions) of parts/systems. 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. 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 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-. If you consider this article useful, share it with anyone in need! Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. 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? I'm assuming that you only need the ramps from one or the other. 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. It's best to have M4 ramps on both the upper and barrel. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. And that is the important thing! Good call. Check often for fit. Thanks! 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. I cant advise on that one folks. hey bro nice to see you here!!! The extension is the part at the end of the barrel that fits inside the upper. Do you have an AR barrel or feed ramp tip? JavaScript is disabled. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. check out the. Either way is good and both types work great with semi auto only guns. Sorta. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. It was in the last few issues of SAR. But, as with anything else, this work can go too far. A closer look at uppers and barrel extensions. Bullets tend to bump, snag, and stub on these guns. 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. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. I've seen that pic, it is a good reference. practical_man *Must have a registered ARFCOM account to win. Damaged Ak front end Barrel in Trunnion with or without sight bases. Either way is good and both types work great with semi auto only guns. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. 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. and add them to non-m4 barrels.? I suggest you get a rifle receiver. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. Some argue that, factually, its a step to enable a smoother feeding. Press J to jump to the feed. I can still use the combination. This has been my concern with modifying the aluminum parts. . I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. Reddit and its partners use cookies and similar technologies to provide you with a better experience. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. Ready to drop onto a complete lower receiver. I checked what I have now. Watch a video about our Modern Series AR barrel: 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. Most work performed while-you-wait, evening and saturday appointments available. You wrote that much to make a point that should have taken about 100 words? 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. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps
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