adding m4 feed ramps to barrel

We want you, our readers, to be able to make informed decisions. Went back to the sellers website and found I was not the only one with problems. Go slow and you'll be done in no time. For this test, I used a Colt upper with M4 feed ramps and a SOCOM heavy 14.5 barrel, just like what is used in the military. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. In short, if you have a Dremmel you can do it yourself. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. are all barrels w/ m4 feed ramps?? Its highly recommended to put any AR-platform firearm together with a matching M4 barrel extension and upper receiver set. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. FFL Fax: 866-721-8691. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. All Rights Reserved. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. So, what is the difference between M4 feed ramps and regular ones? 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. The manufacturer said they had sold hundreds of barrels with out problems reported. I will check with compass lake. Avoid Polishing Too Lightly Or Too Roughly A feed ramp is a basic feature of many breech loading cartridge firearm designs. The barrel Throat is the second most critical component after angles and should be polished with utmost care. The tip of the cartridge rarely comes into contact with the upper receiver. Reach in through the ejection port and slide the on deck cartridge about 1/4 inch forward and observe the tip of the bullet in relationship to the barrel extension. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . I can probably get the upper reciever first. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. JavaScript is disabled. 3. The barrels also had to be modified. One new winner* is announced every week! They were not intended to be super long range man killers. 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. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. I built the upper using a Mega upper with a Compass Lake 18" barrel. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. 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. 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 . Ready to drop onto a complete lower receiver. 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. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. 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? I got my help from this thread, and thank you again to ORD. However Ive built numerous ar15 and lr308 rifles and pistols. Getting the AR Barrel and Receiver Configuration Correct 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. 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. CARBON-15 Stripped Lower Receiver When you need to nail something you use a hammer not a wrench. You need to match up barrels to receivers for optimum performance. 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. Full M4 feed ramps are on both the upper and barrel extension. 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 closer look at uppers and barrel extensions. When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. 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. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M 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. 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. The last is using the best and right ammo for the job. He had more to say and added some more engineer and gun designer speak too. It's an interesting question. The mil actually only specs M4 feed ramps for use in its M4s. 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. It may not display this or other websites correctly. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. if you are OK with 3MOA, you might go 20,000 rounds! What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep M4 ramps help in feeding in for carbine in full auto. BCM 16" M4 Carbine Upper Receiver Group | BravoCompanyUSA Modern Series Barrels. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. The ramps on the regular rifle-type extension are cut just to the edge of the extension. All Rights Reserved. You absolutely do not want it the other way around however. If you ever have an issue, then look at getting a correct barrel for the upper. So, an M4 feed ramp includes the barrel extension and the upper. 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. 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. 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. Get The Best Trigger Pull Gauges To Make Every Shot Count. Thats true overall and good to keep in mind. 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. If this is your first visit, be sure to A couple of times I ended up with the OK set up from the picture above. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. Please be respectful of others. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC So I'm working on my first build, and I'm a little confused. Del-Ton, Inc. AR-15 16" M4 Custom Upper So, an M4 feed ramp includes the barrel extension and the upper. Anodized red parts. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. 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? Description. I wouldn't be concerned at all with any wear after modifying an upper receiver. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. Change the angle so that the ramp ends at the exact same point. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. 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. It was in the last few issues of SAR. Required fields are marked *. Is one better than the other? It's best to have M4 ramps on both the upper and barrel. So the engineers lowered the feed rampa into the receiver. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. True, which is why they're not even needed in semi autos. Press J to jump to the feed. Some suggest taking a grinder to the extension area. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. It is removeable with a special wrench and a barrel clamp/vise. I too built a .458 SOCOM carbine . 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. Full M4 feed ramps start on the upper and continue onto the barrel extension. If it's happening regularly, check the magazines you are using for serviceability. Not all mil-spec features advertised on the product information are the real mil-specs. You are using an out of date browser. -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! We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. AR Tech Tip - Checking M4 Ramps for overhang - YouTube Experts advise on 31 degrees+30 minus-zip. 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. DSA has fat top, Mueller, non feed ramp uppers for $40. Feed ramp - Wikipedia 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. what does it do?? In most cases the ramps only help during full auto mode while cycling at a high rate. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. AR-15 Barrel Extension Question - Sniper's Hide Forum 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. AR9 - Help diagnosing feeding issue - Calguns.net The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Damaged Ak front end Barrel in Trunnion with or without sight bases. The Differences Between an M4 and an AR15 - Music Raiser DoubleStar M4 clone opinions | Survivalist Forum 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. 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. 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. SKU: BCM-URG-M4-16 Features: M4 Feed Ramp Barrel Extension Caliber: 5.56 NATO Barrel Length: 16in Barrel Style: Standard Handguard: None BCM M4 Handguards (Double Heat Shield) - Black + $15.00 PKMR (Polymer KeyMod Rail) Carbine Length - Black + $24.95 PKMR (Polymer KeyMod Rail) Carbine Length - Flat Dark Earth + $24.95 Stock Status: Out of stock Looking For Bear Creek Arsenal Barrels Review? I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. Here you can see an upper with "rifle" feedramps. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. I guess it depends on what your relationship to the necessary shop activities is. Read Now. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. 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. A4 Complete Upper Receiver. My experience with ARs is all A-1s. 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. All Rights Reserved. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. So, lets glide down these lines below to erase your misconceptions about them. "C" stamp and CAGE code available. AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 Add 3% to the total cost for credit card purchases. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. Feeds flawlessly. Display as a link instead, Forged 7075-T6 aluminum is harder than a bulls balls. 6.5 Grendel Type 2 | 16" Black Nitride | 1:8 Twist Carbine Length Gas 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. FN AR-15 5.56 NATO 20" Hammer Forged Barrel - Black The information provided here does not represent the views of Cheaper Than Dirt! Factory said its fine . M16's fed pretty well before the M4 feed ramps were introduced. The extension is the part at the end of the barrel that fits inside the upper. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. again, Thanks. So, I had purchased a 458 upper. 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). Insert the barrel and sharpie the cut area, then use the right bit on a dremel. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. Reliability is the main concern for me when I re-barrel this rifle. Jams and misfires. M4 can better explain their benefit, although they help with more reliable feeding. Clear editor. Full M4 feed ramps start on the upper and continue onto the barrel extension. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. upper recievers and barrels are hard to comeby. Create an account to follow your favorite communities and start taking part in conversations. 's blog. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. m4 feed ramps - The Armorer - AR15Armory.com I like all my guns to be reliable. 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.) . Any body need a anchor for a very small boat? M16s and M16-A1s run at 750 rounds per minute in full auto. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Only took a few minutes. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Notice how the ramp starts on the barrel extension and not in the receiver. Check often for fit. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas Feed ramps being m4 or. In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist Just because you can, doesn't mean you should. 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 read in Bravo company that there are 2 kinds of flat top upper. Your link has been automatically embedded. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. Watch a video about our Modern Series AR barrel: I didnt think anything about it having M4 feed ramps. 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. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. Standard vs M4 Feed Ramps, what's the difference #1056 This is one time it's better to go a little too far than to leave an edge for the . No feed ramps. 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. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. 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. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. As suggested, its best to match the upper and barrel extension no worries that way. *Must have a registered ARFCOM account to win. Married pretty well with my Seekins machined lower. 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. If you consider this article useful, share it with anyone in need! 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. AR-15 Feed Ramp Problems - School of the American Rifle 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. Either way is good and both types work great with semi auto only guns. Its a miracle! By While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. What is the difference between Modern, Performance, and Premium Series Barrels? The best case is to have both an upper and barrel that have the feed ramps. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. Thanks. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. 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. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. Paste as plain text instead, By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. . 50 bucks one way or the other on the barrel ain't squat! Your email address will not be published. Recommend using a gunsmith this route too if you are not comfortable. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Feed ramps on barrel extensions are a good example. For a better experience, please enable JavaScript in your browser before proceeding. check out the. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. For a better experience, please enable JavaScript in your browser before proceeding. Does NOT include pin Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. 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.

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