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.) . However, they do have M4 feed-ramps which is not clone correct. Feels like a silly question now that it makes sense. AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums 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. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). The rifle-platform M16s dont use them. I notice that's a Gibbz (or Gibbz-type) upper. I can assure you that most mods that deviate from the original design aren't 100% reliable. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. Does NOT include pin Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log The Mission of Cheaper Than Dirt! Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. Theres a bit more to it than just polishing. True, which is why they're not even needed in semi autos. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. He had more to say and added some more engineer and gun designer speak too. I use it for hunting dogs only. I've thought about it myself, and I'd like to see test results if any exist, displaying what reliability effect M4 ramps have on other barrel lengths. Thread: Adding M4 feedramps to A1/C7 upper. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. 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. They were not intended to be super long range man killers. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. I think your mistaking that with adding ramps to the receiver. Recommend using a gunsmith this route too if you are not comfortable. 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. 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. which is basicallly an m16a1 cut down. M16s and M16-A1s run at 750 rounds per minute in full auto. What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. 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. FFL Fax: 866-721-8691. I've seen that pic, it is a good reference. The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. Standard vs M4 Feed Ramps, what's the difference #1056 So the engineers lowered the feed rampa into the receiver. Get The Best Trigger Pull Gauges To Make Every Shot Count. 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. It's best to have M4 ramps on both the upper and barrel. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. -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! M4 Feed ramps on barrel extensions are a solid example. 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. You will be able to leave a comment after signing in, AR15Armory.com However Ive built numerous ar15 and lr308 rifles and pistols. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. M16's fed pretty well before the M4 feed ramps were introduced. It is milled out of 6061 T6. If you consider this article useful, share it with anyone in need! I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. 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. what does it do?? We're a little past that point as I already own both the barrel and receiver, both of which cant easily be replaced or swapped for a decent price. I have looked and looked and looked. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. Press question mark to learn the rest of the keyboard shortcuts. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. Looking For Bear Creek Arsenal Barrels Review? Notify me of follow-up comments by email. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. It's best to use rifle/rifle combo or M4/M4. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. 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. Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms Both. These units actually feature the NON-F-Marked (correct) front sight base. All Rights Reserved. Previous. 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). Then you can get a regular rifle barrel for the upper with no ramps. If you have an account, sign in now to post with your account. I too built a .458 SOCOM carbine . I will check with compass lake. So I'm working on my first build, and I'm a little confused. The M4 was the first (allegedy) carbine length gas system. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Little polish. Create an account to follow your favorite communities and start taking part in conversations. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. I built the upper using a Mega upper with a Compass Lake 18" barrel. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. 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. can you buy feed ramps individually? Please allow 5~10 days for assembly and testing before ship date. 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. 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. 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 I have a non ramped barrel in a ramped upper, feeds fine. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M 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. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? 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. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. Ideally both. The best case is to have both an upper and barrel that have the feed ramps. Copyright 1996-2023 AR15.COM LLC. Remember less is more, little by little. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. DoubleStar M4 clone opinions | Survivalist Forum And that is the important thing! If I can correct an issue before it's an issue that is preferred. Some suggest taking a grinder to the extension area. 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). If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. 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? $101.95. You have a rifle barrel. Press J to jump to the feed. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. I like getting another Upper idea then you could end up with two rifles! How to Clone the M16A2 Rifle - The New Rifleman Does anyone have a follow up that confirms or denies my claim? When you need to nail something you use a hammer not a wrench. You are using an out of date browser. 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. Would not feed to save its life! So I called. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. No Feed Ramps on upper? - General Discussion - 308AR.com Community 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. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. If a barrel comes with the feed ramps could I take them off? aaargh.. that's the setup I hate to see. Home Firearms Figuring Out Feed Ramps. 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. 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. My alternative plan is to do exactly as you describe. I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. What is the difference between Modern, Performance, and Premium Series Barrels? Damaged Ak front end Barrel in Trunnion with or without sight bases. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! You cannot paste images directly. 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 . May 17, 2008 in The Armorer. Here you can see an upper with "rifle" feedramps. Also, barrel life is relative. 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. Cutting M4 feed ramps - Calguns.net If this is your first visit, be sure to 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. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. . Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. M4 Feedramps - AR-15 Pro By So there's a lot more going on with rounds bouncing up and down in the mags etc. Thats true overall and good to keep in mind. All uppers are assembled cleaned and tested before shipping. The barrel extension and the receiver both have to have the cuts. Edited April 27, 2014 by Mark Gale The last is using the best and right ammo for the job. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. can the barrel extension be bought individualy? When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. It was in the last few issues of SAR. 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. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . 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! No feed ramps. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. 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. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. and add them to non-m4 barrels.? For a better experience, please enable JavaScript in your browser before proceeding. 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. The extension is the part at the end of the barrel that fits inside the upper. 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. In case My barrel is rifle ramp it won't be so bad after all. M4 feed ramps. Thanks for explaining the feed ramp topic in a couple of different ways. You need to match up barrels to receivers for optimum performance. Any use of this content without express written consent is prohibited. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? I didnt think anything about it having M4 feed ramps. M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just I'd rather not spent the money to get it cut to the specific length I need, FSB installed, etc just to have it immediately not work and have to sort out then or start from square one with a new barrel. JavaScript is disabled. "It will last 5k rounds instead of 4k. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). 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. For a better experience, please enable JavaScript in your browser before proceeding. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. Modify AR15 A2 barrel extension for M4 feed ramp?
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