I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. Single Action and Double Action Which One Is Better For You? 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). Semi autos run slower than full autos. 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. You must log in or register to reply here. Feeds flawlessly. FN AR-15 5.56X45mm Nato . Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. 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. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Full M4 feed ramps are on both the upper and barrel extension. Pasted as rich text. The Mission of Cheaper Than Dirt! 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. Check often for fit. 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. They are better! I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. 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. 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 In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. By From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. If you want precision, dont look to the mil-spec gun, look to the one that is popular in 3-gun competitions, at Thunder Ranch, etc. They . aaargh.. that's the setup I hate to see. 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. No need to alter the upper. They were not intended to be super long range man killers. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. The M-16/M4 are great weapons. Damaged Ak front end Barrel in Trunnion with or without sight bases. It's best to use rifle/rifle combo or M4/M4. You wrote that much to make a point that should have taken about 100 words? I have looked and looked and looked. When you need to nail something you use a hammer not a wrench. A couple of times I ended up with the OK set up from the picture above. Press J to jump to the feed. 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. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Its a miracle! M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces The first reason is that they are, indeed, better. Some suggest taking a grinder to the extension area. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. I like getting another Upper idea then you could end up with two rifles! I wouldn't be concerned at all with any wear after modifying an upper receiver. I will check with compass lake. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. Share it in the comments section. The best case is to have both an upper and barrel that have the feed ramps. All Rights Reserved. Would not feed to save its life! Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. I use it for hunting dogs only. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. Also, barrel life is relative. "A Bad Day At The Range Is Better Than A Great Day Working". Only took a few minutes. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. The extension is the part at the end of the barrel that fits inside the upper. First of Im not a gunsmith or firearms professional. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! I got my help from this thread, and thank you again to ORD. Reliability is the main concern for me when I re-barrel this rifle. 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. which is bad combo. A forum community dedicated to drag racing drivers and enthusiasts. No feed ramps. 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. It was in the last few issues of SAR. instead of mil-spec. You need to match up barrels to receivers for optimum performance. Your link has been automatically embedded. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. Watch a video about our Modern Series AR barrel: The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. There's no downside to having M4 feedramps on your carbine, but they are not as necessary without full auto and when using followers that will not tilt (or in a 20 AR15). 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? Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Do you have an AR barrel or feed ramp tip? I notice that's a Gibbz (or Gibbz-type) upper. I'm assuming that you only need the ramps from one or the other. April 23, 2014 in Rifle - Technical. 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. 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. Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. I have a non ramped barrel in a ramped upper, feeds fine. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. You can modify the upper, but bear in mind that the un-anodized aluminum surface will be very soft and prone to wear if your particular bullet hits it frequently. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. It's near impossible to replace the carry handle upper I have these days, and finding a colt chrome lined 20" light weight barrel isn't a walk in the park either. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. For a better experience, please enable JavaScript in your browser before proceeding. In case My barrel is rifle ramp it won't be so bad after all. Full M4 feed ramps start on the upper and continue onto the barrel extension. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps The barrel blanks available are made from 416 Stainless Steel. One new winner* is announced every week! When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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 pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. 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. 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. 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. Both. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. are all barrels w/ m4 feed ramps?? So, an M4 feed ramp includes the barrel extension and the upper. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. 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. again, Thanks. 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. M4 feed ramps were created during the development of the xM4 carbine for the original Army requirement of a carbine rifle that used the then current M16A2 upper receiver, 14.5" Barrel and had featured a collapsible sliding stock. Avoid Polishing Too Lightly Or Too Roughly However Ive built numerous ar15 and lr308 rifles and pistols. And it appears that the bolt is slamming into the top of the bullet. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. You will be able to leave a comment after signing in, AR15Armory.com Moreover, telling someone that an extension can be modified, while not a lie, is nothing more than mental masturbation when your post contains a caveat for having the knowledge and proper tools. Copyright 1996-2023 AR15.COM LLC. The mil actually only specs M4 feed ramps for use in its M4s. If this is your first visit, be sure to Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. DSA has fat top, Mueller, non feed ramp uppers for $40. So, I had purchased a 458 upper. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. We have four combinations here: I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. For use by barrel manufacturers. Gun smith said , not head spaced properly. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. Either way is good and both types work great with semi auto only guns. Just put it in and shoot it. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. Does it make a big difference? M16s and M16-A1s run at 750 rounds per minute in full auto. 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. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. Remember less is more, little by little. Jams and misfires. And that is the important thing! Copyright 2016 - 2023 by AdventureFootstep.com. Married pretty well with my Seekins machined lower. A closer look at uppers and barrel extensions. Any use of this content without express written consent is prohibited. JavaScript is disabled. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. Does NOT include pin 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. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. So, what is the difference between M4 feed ramps and regular ones? M4 feed ramps are not an original design, they were designed for the M4 In fact, the . By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. 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! Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. In most cases the ramps only help during full auto mode while cycling at a high rate. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. 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 should have taken my own advice for once. Any use of this content without express written consent is prohibited. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. True, which is why they're not even needed in semi autos. My alternative plan is to do exactly as you describe. 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. Dec 17, 2020. If you don't clean it but demand 3/4MOA you might get 1,500. So there's a lot more going on with rounds bouncing up and down in the mags etc. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). . Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. upper recievers and barrels are hard to comeby. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. Anodized red parts. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. What is the difference between Modern, Performance, and Premium Series Barrels? These units actually feature the NON-F-Marked (correct) front sight base. is the m4 feedramp common in barrel extensions? A couple of times I ended up with the OK set up from the picture above. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. Please allow 5~10 days for assembly and testing before ship date. 2. I built the upper using a Mega upper with a Compass Lake 18" barrel. Theres a bit more to it than just polishing. What's the difference? Site towers are not "F" marked SPECS: Length- 14.5". Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. All comments are held for moderation and will appear after approval. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. 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 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. 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. The M4 was the first (allegedy) carbine length gas system. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. Ready to drop onto a complete lower receiver. Any body need a anchor for a very small boat? All uppers are assembled cleaned and tested before shipping. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? I cant advise on that one folks. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. Full M4 feed ramps start on the upper and continue onto the barrel extension. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). 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? Issues can arise when receivers and barrel extensions are mismatched. I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. Either way is good and both types work great with semi auto only guns. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. It is milled out of 6061 T6. You cannot paste images directly. Brevity matters. Lol. Factory said its fine . Barrel customizations are also available. Bullets tend to bump, snag, and stub on these guns. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? 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. I'll probably build a pistol out of this one. Is getting it as part of the upper better? 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 rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Sent back again. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Don't forget read more information about it here! All NFA rules apply. pictures would help. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. i have the rifle barrel. I read in Bravo company that there are 2 kinds of flat top 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. Just because you can, doesn't mean you should. 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. Thanks for explaining the feed ramp topic in a couple of different ways. 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. 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. You want them to match. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. 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). I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. Your previous content has been restored. Guess what? Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Metal cases ammunition such as Wolf through an M4 clone? The barrel Throat is the second most critical component after angles and should be polished with utmost care. My experience with ARs is all A-1s. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. You have a rifle barrel. 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. which is basicallly an m16a1 cut down. Feels like a silly question now that it makes sense. For a better experience, please enable JavaScript in your browser before proceeding. 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. Thank you for answering the question do well. "C" stamp and CAGE code available. Featuring hand lapped 1/8 twist rate button rifling and M4 feed ramps barrel extensions, the 410 stainless barrel gives the shooter the best balance of weight and accuracy. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. 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. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. He had more to say and added some more engineer and gun designer speak too. Not all mil-spec features advertised on the product information are the real mil-specs. A4 Complete Upper Receiver. One new winner* is announced every week! M4 Feed ramps on barrel extensions are a solid example. 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. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! 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). I don't have much to add re: feed ramps, but. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. Good call. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. 3. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. Editors Note: This article was originally published in January of 2019. Notify me of follow-up comments by email. This can lead to a rare but odd situation; barrel and receiver mismatch. Edited April 27, 2014 by Mark Gale 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.
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