Both. 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. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. Full M4 feed ramps start on the upper and continue onto the barrel extension. The difference between standard feed ramps and M4 ramps is easy to see. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. 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. Does NOT include pin You need to match up barrels to receivers for optimum performance. Reddit and its partners use cookies and similar technologies to provide you with a better experience. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. One new winner* is announced every week! I will check with compass lake. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. Modern Series Barrels. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. 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 . 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've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. 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. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. Read Now. A closer look at uppers and barrel extensions. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. M4 Feed ramps on barrel extensions are a solid example. You want them to match. Whether they materialize or not depends on the direction of the mismatch. Experts advise on 31 degrees+30 minus-zip. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. 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. Would not feed to save its life! The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. which is bad combo. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. M4 Feed ramps on barrel extensions are a solid example. Edited April 27, 2014 by Mark Gale 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. Change the angle so that the ramp ends at the exact same point. Here you can see an upper with "rifle" feedramps. Finding the proper upper receiver is your best option. Guess what? 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 will last 5k rounds instead of 4k. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. By So, what is the difference between M4 feed ramps and regular ones? 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). Powered by Invision Community. Should not be too hard. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. LanceRiley, . 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 should have taken my own advice for once. 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. #2. And that is the important thing! They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. I checked what I have now. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. I'm assuming that you only need the ramps from one or the other. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. Get The Best Trigger Pull Gauges To Make Every Shot Count. colt A1E1 733 uppers didn't have extended carbine feedramps ? Given that most of us dont always have perfect access to truly genuine Mil-Spec, mil-standard parts (those actually used in issued fighting tools), were shopping based on a little part trust and a bigger part knowledge. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. 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. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. Try this little exercise: 1. Feeds flawlessly. and add them to non-m4 barrels.? i have the rifle barrel. What is the difference between Modern, Performance, and Premium Series 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. Check often for fit. Clear editor. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! are all barrels w/ m4 feed ramps?? You also repeated yourself. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps 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. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. Upload or insert images from URL. 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. I use it for hunting dogs only. A forum community dedicated to drag racing drivers and enthusiasts. 30 cal. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. Lol. Also, barrel life is relative. May 17, 2008 in The Armorer. 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. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? I just need a little guidance on this and I'm having trouble getting good results from Google. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. 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. Little polish. Thank you for answering the question do well. A feed ramp is a basic feature of many breech loading cartridge firearm designs. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? Don't forget read more information about it here! Gas block area is .750 diameter. Paste as plain text instead, The best case is to have both an upper and barrel that have the feed ramps. Reliability is the main concern for me when I re-barrel this rifle. FFL Fax: 866-721-8691. However, they do have M4 feed-ramps which is not clone correct. Good call. All we do is dremmel it to match - we dont remove it and grind to any specific angle. But, as with anything else, this work can go too far. 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. Thread: Adding M4 feedramps to A1/C7 upper. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. instead of mil-spec. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) The barrel blanks available are made from 416 Stainless Steel. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. M4 feed ramps will extend the barrel extension and the upper receiver. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. 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. You absolutely do not want it the other way around however. Earlfillmore 13 hr. Proper maintenance and lubrication. M4 can better explain their benefit, although they help with more reliable feeding. 2. I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. M4 barrel to non M4 receiver is fine, but not the other way around. check out the. He had more to say and added some more engineer and gun designer speak too. The tip of the cartridge rarely comes into contact with the upper receiver. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 3. 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. ago KrinkyDink2 9 hr. You can post now and register later. 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. True, which is why they're not even needed in semi autos. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. Press J to jump to the feed. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Single Action and Double Action Which One Is Better For You? Most work performed while-you-wait, evening and saturday appointments available. 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. *Must have a registered ARFCOM account to win. What's the difference? Sent back again. Caught a deal on a matched barrel and bolt. aaargh.. that's the setup I hate to see. Display as a link instead, from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. I picked up a side charging upper from Sundevil last year. I guess it depends on what your relationship to the necessary shop activities is. I prefer them. The information provided here does not represent the views of Cheaper Than Dirt! 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. Press question mark to learn the rest of the keyboard shortcuts. Description. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. Anodized red parts. There is a picture of the various options, hopefully another poster can link them. 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. 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. In most cases the ramps only help during full auto mode while cycling at a high rate. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. The ramps are in the barrel extension. 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. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. 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. 50 bucks one way or the other on the barrel ain't squat! Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. I can still use the combination. I have a non ramped barrel in a ramped upper, feeds fine. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? You need to match up barrels to receivers for optimum performance. so im thinking I might as well just get the unramp upper. is the m4 feedramp common in barrel extensions? I'm a machinist in the aerospace industry and lucky enough to have. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. A4 Complete Upper Receiver. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces It is removeable with a special wrench and a barrel clamp/vise. Metal cases ammunition such as Wolf through an M4 clone? Feels like a silly question now that it makes sense. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. Thanks! 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. If it's happening regularly, check the magazines you are using for serviceability. 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. This is one time it's better to go a little too far than to leave an edge for the . if you are OK with 3MOA, you might go 20,000 rounds! Does anyone have a follow up that confirms or denies my claim? 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 If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. Sorta. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). You wrote that much to make a point that should have taken about 100 words? 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! 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! In case My barrel is rifle ramp it won't be so bad after all. Thanks. I don't have much to add re: feed ramps, but. Copyright 2016 - 2023 by AdventureFootstep.com. So, lets glide down these lines below to erase your misconceptions about them. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. 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 AR9 - Help diagnosing feeding issue. The barrel Throat is the second most critical component after angles and should be polished with utmost care. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. I got my help from this thread, and thank you again to ORD. Seems M4 is all the rage these days. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. What is an m4 feed ramp? Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. A couple of times I ended up with the OK set up from the picture above. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). You must log in or register to reply here. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned.
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adding m4 feed ramps to barrel