aaargh.. that's the setup I hate to see. "C" stamp and CAGE code available. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. For use by barrel manufacturers. Display as a link instead, JavaScript is disabled. can the barrel extension be bought individualy? 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 Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. 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. A couple of times I ended up with the OK set up from the picture above. So there's a lot more going on with rounds bouncing up and down in the mags etc. I can still use the combination. 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 have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. Your link has been automatically embedded. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. 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. M4 can better explain their benefit, although they help with more reliable feeding. -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! What is an m4 feed ramp? Gun smith said , not head spaced properly. Metal cases ammunition such as Wolf through an M4 clone? Factory said its fine . When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Copyright 1996-2023 AR15.COM LLC. 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. Should not be too hard. Reddit and its partners use cookies and similar technologies to provide you with a better experience. 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. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! A4 Complete Upper Receiver. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. Paste as plain text instead, Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. The barrel extension and the receiver both have to have the cuts. The best case is to have both an upper and barrel that have the feed ramps. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. I checked what I have now. Brevity matters. You need to match up barrels to receivers for optimum performance. if you are OK with 3MOA, you might go 20,000 rounds! 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. By If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. Feeds flawlessly. Bear Creek Arsenal Barrels - 6.5 Grendel Type 2 Barrel This Gorilla Machining AR-15 16" heavy Black Nitride 6.5 Grendel barrel has a Carbine length gas system with a 1:8 twist. Caught a deal on a matched barrel and bolt. So I called. The rifle-platform M16s dont use them. Only took a few minutes. I've shot a good deal of rounds through 20" A2's and I realize they run but you are describing issues that the M4 feed ramps alleviate, that would probably be good to reduce on A2's as well. We have four combinations here: He had more to say and added some more engineer and gun designer speak too. Site towers are not "F" marked SPECS: Length- 14.5". M16's fed pretty well before the M4 feed ramps were introduced. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. i have the rifle barrel. 1 is a standard and the other for use with m4 feed ramp barrels. A couple of times I ended up with the OK set up from the picture above. well.. it's kinda hard to get stuff in this part of the world. I guess it depends on what your relationship to the necessary shop activities is. For a better experience, please enable JavaScript in your browser before proceeding. LanceRiley, 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 . Avoid Polishing Too Lightly Or Too Roughly and add them to non-m4 barrels.? One of the AR15 engineers under Gene Stoner pretty much said that the M4 isn't a good platform, especially once the gas port erodes a bit. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. *Must have a registered ARFCOM account to win. By Notice how the ramp starts on the barrel extension and not in the receiver. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. 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. In most cases the ramps only help during full auto mode while cycling at a high rate. Seems M4 is all the rage these days. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. All Rights Reserved. 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. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. I too built a .458 SOCOM carbine . Guess what? Is it worth the extra 50 bucks?" The Fora platform includes forum software by XenForo. check out the. 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. 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. 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. Which Model Colt 1911 is For Me? The information provided here does not represent the views of Cheaper Than Dirt! With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Single Action and Double Action Which One Is Better For You? I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. I can assure you that most mods that deviate from the original design aren't 100% reliable. You want them to match. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. So, I had purchased a 458 upper. M4 ramps help in feeding in for carbine in full auto. 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. Lol. Earlfillmore 13 hr. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. 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. 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. Looking For Bear Creek Arsenal Barrels Review? It's an interesting question. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? 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. can you buy feed ramps individually? The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. The barrel Throat is the second most critical component after angles and should be polished with utmost care. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. Do you have an AR barrel or feed ramp tip? Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. which is bad combo. Barrel customizations are also available. M4A1s run at 950 rounds per minute in full auto and even 950+ rounds per minute as the gas port erodes open bigger and bigger with wear and allows them to run even faster and much more violent. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Ideally both. I have looked and looked and looked. 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. I'll probably build a pistol out of this one. The best case is to have both an upper and barrel that have the feed ramps. A forum community dedicated to drag racing drivers and enthusiasts. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . Pasted as rich text. 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. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. Just because you can, doesn't mean you should. M4 Feed ramps on barrel extensions are a solid example. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. Feed ramps being m4 or. 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 The Mission of Cheaper Than Dirt! I wouldn't be concerned at all with any wear after modifying an upper receiver. are all barrels w/ m4 feed ramps?? Try this little exercise: 1. If you don't clean it but demand 3/4MOA you might get 1,500. 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). The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces 3. 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. 5. Its not a big deal but still an important thing to remember and understand. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. So, an M4 feed ramp includes the barrel extension and the upper. A closer look at uppers and barrel extensions. 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. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. Does it make a big difference? Share it in the comments section. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. 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). I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. I think your mistaking that with adding ramps to the receiver. Proper maintenance and lubrication. The parts are interchangeable. As suggested, its best to match the upper and barrel extension no worries that way. 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.) . Upload or insert images from URL. Your previous content has been restored. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. Create an account to follow your favorite communities and start taking part in conversations. I got my help from this thread, and thank you again to ORD. Watch a video about our Modern Series AR barrel: Barrel, sight and trigger work on most pistols and shotguns. 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. Go back to writing school. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. Some suggest taking a grinder to the extension area. The ramps on the regular rifle-type extension are cut just to the edge of the extension. 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. DSA has fat top, Mueller, non feed ramp uppers for $40. 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. I use it for hunting dogs only. 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. 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. 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. Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. So, lets glide down these lines below to erase your misconceptions about them. M16s and M16-A1s run at 750 rounds per minute in full auto. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? If you have a m4 ramped upper but not barrel you can cause problems as there's a lip of steel barrel extension in the way that can cause feeding problems. The 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. I have a non ramped barrel in a ramped upper, feeds fine. 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). Went back to the sellers website and found I was not the only one with problems. The photo shows the dents and the bolt lugs line up perfectly. Any body need a anchor for a very small boat? Edited April 27, 2014 by Mark Gale Regular feed ramps are cuts into the barrel extension only, which allows guiding the round into the chamber during loading, making them a fundamental feature of many breech-loading firearm designs. Married pretty well with my Seekins machined lower. BrianEnos.com The tip of the cartridge rarely comes into contact with the upper receiver. No need to alter the upper. 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 can probably get the upper reciever first. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. M4 feed ramps. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. Just put it in and shoot it. These units actually feature the NON-F-Marked (correct) front sight base. Don't forget read more information about it here! May 17, 2008 in The Armorer. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. I picked up a side charging upper from Sundevil last year. Does anyone have a follow up that confirms or denies my claim? 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. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. The barrels also had to be modified. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. April 23, 2014 in Rifle - Technical. All Rights Reserved. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps Reddit and its partners use cookies and similar technologies to provide you with a better experience. colt A1E1 733 uppers didn't have extended carbine feedramps ? [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. 2. They . My alternative plan is to do exactly as you describe. The barrel blanks available are made from 416 Stainless Steel. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics.
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