On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Paste as plain text instead, 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. FN AR-15 5.56X45mm Nato . 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. I suggest you get a rifle receiver. Both. Now move move the on deck cartridge forward to the 3/8 of inch position and again note the position of the tip of the bullet in relationship to the barrel extension. It's an interesting question. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? So I called. Not all mil-spec features advertised on the product information are the real mil-specs. 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 I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . if you are OK with 3MOA, you might go 20,000 rounds! A couple of times I ended up with the OK set up from the picture above. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. Create an account to follow your favorite communities and start taking part in conversations. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. I use it for hunting dogs only. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. Editors Note: This article was originally published in January of 2019. Does it make a big difference? 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. Issues can arise when receivers and barrel extensions are mismatched. For new construction barrels only. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. Most work performed while-you-wait, evening and saturday appointments available. Reddit and its partners use cookies and similar technologies to provide you with a better experience. This is why you can use a barrel with an extension with M4 feedramps with a receiver that does not have feedramps, but you cannot use a receiver with M4 feedramps with a barrel with an extension with rifle feedramps. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Feeds flawlessly. Is getting it as part of the upper better? 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. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. So the engineers lowered the feed rampa into the receiver. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. 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. Sorta. so im thinking I might as well just get the unramp upper. What is an m4 feed ramp? What is the difference between Modern, Performance, and Premium Series Barrels? The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Thats why AR10s- And Scar heavies exist for. You have a rifle barrel. I'm a machinist in the aerospace industry and lucky enough to have. Display as a link instead, I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. The parts are interchangeable. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. I prefer them. 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 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). Copyright 1996-2023 AR15.COM LLC. Bullets tend to bump, snag, and stub on these guns. Press question mark to learn the rest of the keyboard shortcuts. The barrel extension and the receiver both have to have the cuts. M4 M-4 Feed Ramp Jam with 55 gr grain Bullets, Solution, Fix, AR15 AR-15 Stuck Cartridge iowaunemployment 21K views 10 years ago Comparing AR15 barrels -Faxon vs. Bear Creek arsenal-. I guess it depends on what your relationship to the necessary shop activities is. Gun smith said , not head spaced properly. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. What's the difference? Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. Amazing what happens in a thread over a simple question. 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. Married pretty well with my Seekins machined lower. If you ever have an issue, then look at getting a correct barrel for the upper. They guide the bullet up and into the chamber. If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. Only took a few minutes. Man, its crazy how many of yall have absolutely no idea why you do what you do. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. Try this little exercise: 1. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Notify me of follow-up comments by email. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. Thank you for answering the question do well. So I'm working on my first build, and I'm a little confused. 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. 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. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. colt A1E1 733 uppers didn't have extended carbine feedramps ? Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. 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? I should have taken my own advice for once. I built the upper using a Mega upper with a Compass Lake 18" barrel. However, they do have M4 feed-ramps which is not clone correct. 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. Seems M4 is all the rage these days. The last is using the best and right ammo for the job. Any body need a anchor for a very small boat? By Yamil Sued August 6, 2021. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Its also recommended you polish the ramps once youve achieved the appropriate angle. 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. 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. DSA has fat top, Mueller, non feed ramp uppers for $40. In most cases the ramps only help during full auto mode while cycling at a high rate. *Must have a registered ARFCOM account to win. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. I cant advise on that one folks. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. I can still use the combination. M16's fed pretty well before the M4 feed ramps were introduced. I had seen these pix years ago and dismissed the idea of mix and match. . Since the M4 barrel is one and a half inches shorter than the minimum legal barrel you can install in an AR15, the M4 gas tube will be, of course, smaller. Earlfillmore 13 hr. This can lead to a rare but odd situation; barrel and receiver mismatch. 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. All comments are held for moderation and will appear after approval. 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. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. True, which is why they're not even needed in semi autos. Semi autos run slower than full autos. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. Finding the proper upper receiver is your best option. Full M4 feed ramps start on the upper and continue onto the barrel extension. 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. 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 Shooter's Log, 2012 SHOT Show Special Report: Daniel Defense DDM4 V5 in .300 Blackout and a Factory SBR - The Shooter's Log, 2012 SHOT Show Special Report: SOG Armory Predator Rifle - The Shooter's Log, Surefire's 100-Round MAG5-100: The Highest Capacity AR-15 Magazine - The Shooter's Log, Throwback Thursday: Taurus Judge Range Report, ATI Milsport SGA 410 All the Advantages of an AR in .410, Ruger SR1911 LW Commander The Lightweight .45 ACP, Rifle Hack: Sighting for 100 Yards at a Distance of 25 Yards, Throwback Thursday: All About Bullet Grain. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. Its a miracle! Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . This 20" BCM barrel is machined from SS410 stainless steel. May 17, 2008 in The Armorer. For use by barrel manufacturers. 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? 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. 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. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. Gas block area is .750 diameter. You are using an out of date browser. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. 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? The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. M4 feed ramps will extend the barrel extension and the upper receiver. No need to alter the upper. Pasted as rich text. M4 Feed ramps on barrel extensions are a solid example. 2. Full M4 feed ramps start on the upper and continue onto the barrel extension. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. 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. Watch a video about our Modern Series AR barrel: Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. The difference between standard feed ramps and M4 ramps is easy to see. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. 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. The ramps are in the barrel extension. For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. 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. A forum community dedicated to drag racing drivers and enthusiasts. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. All uppers are assembled cleaned and tested before shipping. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Either way is good and both types work great with semi auto only guns. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. 3. 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 ramps help in feeding in for carbine in full auto. #2. Change the angle so that the ramp ends at the exact same point. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! Create an account to follow your favorite communities and start taking part in conversations. Metal cases ammunition such as Wolf through an M4 clone? Just put it in and shoot it. 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. The M-16/M4 are great weapons. I read in Bravo company that there are 2 kinds of flat top upper. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. pictures would help. If I can correct an issue before it's an issue that is preferred. Copyright 2016 - 2023 by AdventureFootstep.com. The M4 was the first (allegedy) carbine length gas system. Brevity matters. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. I like all my guns to be reliable. After two months of back and forth, cleaned up the feed ramps. Would not feed to save its life! If you consider this article useful, share it with anyone in need! Good call. All Rights Reserved. If a barrel comes with the feed ramps could I take them off? Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. CARBON-15 Stripped Lower Receiver By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Is one better than the other? Go back to writing school. Clear editor. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. This has been my concern with modifying the aluminum parts. Thanks! This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Home Firearms Figuring Out Feed Ramps. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. 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. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. The ramps on the regular rifle-type extension are cut just to the edge of the extension. 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. 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. 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 . The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-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. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Forged 7075-T6 aluminum is harder than a bulls balls. Don't forget read more information about it here! So, what is the difference between M4 feed ramps and regular ones? You cannot paste images directly. 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. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. ago KrinkyDink2 9 hr. 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. Then you can get a regular rifle barrel for the upper with no ramps. Only took a few minutes. 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. Caught a deal on a matched barrel and bolt. Get The Best Trigger Pull Gauges To Make Every Shot Count. can the barrel extension be bought individualy? Barrel, sight and trigger work on most pistols and shotguns. I checked what I have now. I got my help from this thread, and thank you again to ORD. 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. Sent back again. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. Ready to drop onto a complete lower receiver. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. AR9 - Help diagnosing feeding issue. It's best to use rifle/rifle combo or M4/M4. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo.

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