adding m4 feed ramps to barrel

M4 feed ramps will extend the barrel extension and the upper receiver. 2. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. 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 Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. Somwhere in the 1990s I believe, Colt designed the M4 feed ramps, where they took some of the material out of the upper receiver, cut two little ramps in it and then cut the ramps in the barrel extention a little further forward. instead of mil-spec. 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. 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. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. So the engineers lowered the feed rampa into the receiver. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. 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. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. 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. The barrel extension and the receiver both have to have the cuts. You are using an out of date browser. I like getting another Upper idea then you could end up with two rifles! "A Bad Day At The Range Is Better Than A Great Day Working". Check often for fit. 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. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. 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. All uppers are assembled cleaned and tested before shipping. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. Is getting it as part of the upper better? 3. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . Ready to drop onto a complete lower receiver. 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? can you buy feed ramps individually? 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 I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. what does it do?? Dec 17, 2020. So there's a lot more going on with rounds bouncing up and down in the mags etc. AR9 - Help diagnosing feeding issue. 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. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. It may not display this or other websites correctly. This is a big tip, by the way, for pistol-caliber ARs. 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. A forum community dedicated to drag racing drivers and enthusiasts. 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. What is an m4 feed ramp? Sorta. LanceRiley, Brevity matters. I've seen that pic, it is a good reference. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. All Rights Reserved. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! Pasted as rich text. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Only took a few minutes. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. It's an interesting question. It's best to use rifle/rifle combo or M4/M4. 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. aaargh.. that's the setup I hate to see. The Mission of Cheaper Than Dirt! 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. Press J to jump to the feed. 5. I prefer them. Gun smith said , not head spaced properly. You have a rifle barrel. Using an upper with M4 feed ramps with a barrel that does not have them will lead to feed problems as it creates a ledge/lip that can catch the bullet tip as it tries to feed. can the barrel extension be bought individualy? BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. Any use of this content without express written consent is prohibited. Create an account to follow your favorite communities and start taking part in conversations. I got my help from this thread, and thank you again to ORD. M4 Feed ramps on barrel extensions are a solid example. 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. Avoid Polishing Too Lightly Or Too Roughly 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. Notice how the ramp starts on the barrel extension and not in the receiver. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. The barrel Throat is the second most critical component after angles and should be polished with utmost care. Semi autos run slower than full autos. 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 . Watch a video about our Modern Series AR barrel: I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. When you need to nail something you use a hammer not a wrench. 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). $101.95. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. These units actually feature the NON-F-Marked (correct) front sight base. I checked what I have now. Its not a big deal but still an important thing to remember and understand. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. Mil-spec is good for the masses, and if you want the job done it is a great start. By Paste as plain text instead, Create an account to follow your favorite communities and start taking part in conversations. 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). Not all mil-spec features advertised on the product information are the real mil-specs. Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. 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. Interesting reading. 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. 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. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. I think your mistaking that with adding ramps to the receiver. Share it in the comments section. Upload or insert images from URL. What is the difference between Modern, Performance, and Premium Series Barrels? 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. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Change the angle so that the ramp ends at the exact same point. The manufacturer said they had sold hundreds of barrels with out problems reported. well.. it's kinda hard to get stuff in this part of the world. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. Feed ramps on barrel extensions are a good example. All we do is dremmel it to match - we dont remove it and grind to any specific angle. 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. 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. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? For use by barrel manufacturers. Its a miracle! Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. They guide the bullet up and into the chamber. 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.) . Finding the proper upper receiver is your best option. 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. 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 M-16/M4 are great weapons. The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. I cant advise on that one folks. 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. It was in the last few issues of SAR. Its also recommended you polish the ramps once youve achieved the appropriate angle. hey bro nice to see you here!!! Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. Both. Either way is good and both types work great with semi auto only guns. Man, its crazy how many of yall have absolutely no idea why you do what you do. So, an M4 feed ramp includes the barrel extension and the upper. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. The extension is the part at the end of the barrel that fits inside the upper. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. The last is using the best and right ammo for the job. You can always buy a non-m4 extension and have the new barrel retimed and headspaced, but it will probably cost more than a new upper receiver. 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. Don't forget read more information about it here! Modern Series Barrels. 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. There is a picture of the various options, hopefully another poster can link them. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. I can probably get the upper reciever first. 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. 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. All Rights Reserved. Clear editor. First of Im not a gunsmith or firearms professional.

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