Copyright 2016 - 2023 by AdventureFootstep.com. 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. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. Please be respectful of others. I've seen that pic, it is a good reference. 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 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. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. Mil-spec is good for the masses, and if you want the job done it is a great start. We want you, our readers, to be able to make informed decisions. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. Gun smith said , not head spaced properly. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. 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). pictures would help. -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! Press J to jump to the feed. If a barrel comes with the feed ramps could I take them off? Just because you can, doesn't mean you should. Only took a few minutes. aaargh.. that's the setup I hate to see. 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. I cant advise on that one folks. Experts advise on 31 degrees+30 minus-zip. Its also recommended you polish the ramps once youve achieved the appropriate angle. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . upper recievers and barrels are hard to comeby. You absolutely do not want it the other way around however. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed 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. Either way is good and both types work great with semi auto only guns. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. Previous. Press question mark to learn the rest of the keyboard shortcuts. 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. This is one time it's better to go a little too far than to leave an edge for the . Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? Modern Series Barrels. By Went back to the sellers website and found I was not the only one with problems. For new construction barrels only. M4 can better explain their benefit, although they help with more reliable feeding. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. 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? I had seen these pix years ago and dismissed the idea of mix and match. This 20" BCM barrel is machined from SS410 stainless steel. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. Change the angle so that the ramp ends at the exact same point. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. I don't have much to add re: feed ramps, but. Issues can arise when receivers and barrel extensions are mismatched. EDIT: Okay, I understand now! And it appears that the bolt is slamming into the top of the bullet. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. The barrels also had to be modified. ago KrinkyDink2 9 hr. DSA has fat top, Mueller, non feed ramp uppers for $40. I use it for hunting dogs only. Full M4 feed ramps start on the upper and continue onto the barrel extension. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Does anyone have a follow up that confirms or denies my claim? You have the option of barrel type, thread, fluting, finish type and to add a match bolt. All we do is dremmel it to match - we dont remove it and grind to any specific angle. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. BrianEnos.com I like getting another Upper idea then you could end up with two rifles! Check often for fit. 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). Factory said its fine . 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 barrel Throat is the second most critical component after angles and should be polished with utmost care. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Press question mark to learn the rest of the keyboard shortcuts. Remember less is more, little by little. 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. well.. it's kinda hard to get stuff in this part of the world. Ready to drop onto a complete lower receiver. Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. If your magazines are set up correctly, and the feed lip edges polished smooth, each round fed from the magazine will go directly into the chamber. 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 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. FN AR-15 5.56X45mm Nato . 50 bucks one way or the other on the barrel ain't squat! In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. Description. so it is better to have an upper reciever that's designed for non-m4 feed ramps since you can put in standard barrels right? Bullets tend to bump, snag, and stub on these guns. which is basicallly an m16a1 cut down. so im thinking I might as well just get the unramp upper. 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. True, which is why they're not even needed in semi autos. Get The Best Trigger Pull Gauges To Make Every Shot Count. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. A couple of times I ended up with the OK set up from the picture above. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. M16s and M16-A1s run at 750 rounds per minute in full auto. Feed ramps on barrel extensions are a good example. 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. Metal cases ammunition such as Wolf through an M4 clone? 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. All uppers are assembled cleaned and tested before shipping. You need to match up barrels to receivers for optimum performance. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. 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. However Ive built numerous ar15 and lr308 rifles and pistols. Interesting reading. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. 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 and add them to non-m4 barrels.? The photo shows the dents and the bolt lugs line up perfectly. I'm a machinist in the aerospace industry and lucky enough to have. They . 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. 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. While this gun is a more of novelty build than a "serious use" AR, I intend to use good parts and want it to run as well as my other ARs. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. Notify me of follow-up comments by email. JavaScript is disabled. Home Firearms Figuring Out Feed Ramps. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! 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. All NFA rules apply. As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. Looking For Bear Creek Arsenal Barrels Review? There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. 3. Man, its crazy how many of yall have absolutely no idea why you do what you do. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Full M4 feed ramps are on both the upper and barrel extension. This has been my concern with modifying the aluminum parts. A couple of times I ended up with the OK set up from the picture above. 1 is a standard and the other for use with m4 feed ramp barrels. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. 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. 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. is the m4 feedramp common in barrel extensions? Display as a link instead, 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. Powered by Invision Community. Read Now. Good call. again, Thanks. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. Paste as plain text instead, The rifle-platform M16s dont use them. If you consider this article useful, share it with anyone in need! One new winner* is announced every week! 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. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. I didnt think anything about it having M4 feed ramps. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). #2. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. Recommend using a gunsmith this route too if you are not comfortable. Both. 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! Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. 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. practical_man They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. I should have taken my own advice for once. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. Your previous content has been restored. Single Action and Double Action Which One Is Better For You? For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. 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. I guess it depends on what your relationship to the necessary shop activities is. are all barrels w/ m4 feed ramps?? Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. 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 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. Is one better than the other? Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. The ramps are in the barrel extension. If I can correct an issue before it's an issue that is preferred. M4 barrel to non M4 receiver is fine, but not the other way around. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. The ramps on the regular rifle-type extension are cut just to the edge of the extension. I think your mistaking that with adding ramps to the receiver. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Shorter length equates to much higher pressure in the upper receiver. Anodized red parts. Amazing what happens in a thread over a simple question. However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. LanceRiley, hey bro nice to see you here!!! 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. Jams and misfires. Sorta. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. But, as with anything else, this work can go too far. Whether they materialize or not depends on the direction of the mismatch.