I should have taken my own advice for once. The tip of the cartridge rarely comes into contact with the upper receiver. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Seems M4 is all the rage these days. Bullets tend to bump, snag, and stub on these guns. 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. 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. Ideally both. Remember less is more, little by little. Some argue that, factually, its a step to enable a smoother feeding. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. which is bad combo. Single Action and Double Action Which One Is Better For You? I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. Looking For Bear Creek Arsenal Barrels Review? The parts are interchangeable. I found the article very informative. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. instead of mil-spec. You wrote that much to make a point that should have taken about 100 words? For new construction barrels only. . 4. Which Model Colt 1911 is For Me? 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. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. They were not intended to be super long range man killers. 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. Ready to drop onto a complete lower receiver. 3. Barrel customizations are also available. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. . Rifle vs m4 feed ramps - AR15.COM I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. Don't forget read more information about it here! Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. Semi autos run slower than full autos. Factory said its fine . 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. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). 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. For a better experience, please enable JavaScript in your browser before proceeding. I picked up a side charging upper from Sundevil last year. 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 Modern Series Barrels. I will check with compass lake. It was in the last few issues of SAR. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? 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. *Must have a registered ARFCOM account to win. 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. If you have a m4 ramped upper but not barrel you can cause problems as there's a lip of steel barrel extension in the way that can cause feeding problems. Its not a big deal but still an important thing to remember and understand. I notice that's a Gibbz (or Gibbz-type) upper. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. You need to match up barrels to receivers for optimum performance. 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-. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. M4 Feed ramps on barrel extensions are a solid example. "It will last 5k rounds instead of 4k. However, if youre wanting to rebarrel a non-M4-cut upper with an M4 feed-ramp equipped barrel, or going the other direction: you have a new upper thats been relieved to fit with the M4 ramps, and a non-M4-cut barrel extension, and that wont work! I can assure you that most mods that deviate from the original design aren't 100% reliable. 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. Not saying a really good gunsmith cant do it, just that theres a bit of an involved process. 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? Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. . 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 Add 3% to the total cost for credit card purchases. First of Im not a gunsmith or firearms professional. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC If you don't clean it but demand 3/4MOA you might get 1,500. So, what is the difference between M4 feed ramps and regular ones? again, Thanks. Please be respectful of others. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. A feed ramp is a basic feature of many breech loading cartridge firearm designs. Getting the AR Barrel and Receiver Configuration Correct By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. I got my help from this thread, and thank you again to ORD. 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. How to Clone the M16A2 Rifle - The New Rifleman 2. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Reliability is the main concern for me when I re-barrel this rifle. The first reason is that they are, indeed, better. Caught a deal on a matched barrel and bolt. Anodized red parts. And that is the important thing! Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. The best case is to have both an upper and barrel that have the feed ramps. 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. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. 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. 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. 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. Full M4 feed ramps are on both the upper and 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. The barrels also had to be modified. 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. ago KrinkyDink2 9 hr. 11.5", SBN, 1:7, 5.56 NATO Barrel Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? It may not display this or other websites correctly. 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. Little polish. 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. 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. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. Avoid Polishing Too Lightly Or Too Roughly Damaged Ak front end Barrel in Trunnion with or without sight bases. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. These units actually feature the NON-F-Marked (correct) front sight base. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. I read in Bravo company that there are 2 kinds of flat top upper. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. Powered by Invision Community. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. 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. 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. Earlfillmore 13 hr. What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep upper recievers and barrels are hard to comeby. M16's fed pretty well before the M4 feed ramps were introduced. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. Only took a few minutes. and add them to non-m4 barrels.? The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. There is a picture of the various options, hopefully another poster can link them. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. One new winner* is announced every week! My alternative plan is to do exactly as you describe. So, an M4 feed ramp includes the barrel extension and the upper. You must log in or register to reply here. Pasted as rich text. I guess it depends on what your relationship to the necessary shop activities is. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Also, barrel life is relative. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. 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. Feels like a silly question now that it makes sense. I think your mistaking that with adding ramps to the receiver. A couple of times I ended up with the OK set up from the picture above. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Experts advise on 31 degrees+30 minus-zip. Thanks! 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. Clear editor. If this is your first visit, be sure to How to Polish a Feedramp Quick and Easy | Firearms Talk AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. Modify AR15 A2 barrel extension for M4 feed ramp? 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. aaargh.. that's the setup I hate to see. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. M4-style barrel extension with Rifle-type upper - Rifle - Technical Whether they materialize or not depends on the direction of the mismatch. It's an interesting question. The last is using the best and right ammo for the job. The ramps are in the barrel extension. Cutting M4 feed ramps - Calguns.net The Mission of Cheaper Than Dirt! True, which is why they're not even needed in semi autos. There's a 7 degree difference between standard and M4 ramps. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. All Rights Reserved. The information provided here does not represent the views of Cheaper Than Dirt! [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. Barrel, sight and trigger work on most pistols and shotguns. I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. So, an M4 feed ramp includes the barrel extension and the upper. Just put it in and shoot it. Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. FN AR-15 5.56X45mm Nato . Copyright 1996-2023 AR15.COM LLC. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper Your previous content has been restored. Sorta. 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. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. And it appears that the bolt is slamming into the top of the bullet. 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. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces M4 feed ramps. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). Full M4 feed ramps start on the upper and continue onto the barrel extension. Your email address will not be published. I'll probably build a pistol out of this one. Is getting it as part of the upper better? M4 Barrel Extension (M4 Feedramps) - Bravo Company USA Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. All NFA rules apply. Paste as plain text instead, AR Tech Tip - Checking M4 Ramps for overhang - YouTube If I can correct an issue before it's an issue that is preferred. can you buy feed ramps individually? Read Now. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. Does NOT include pin 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. 's blog. Either way is good and both types work great with semi auto only guns. Notify me of follow-up comments by email. i have the rifle barrel. The manufacturer said they had sold hundreds of barrels with out problems reported. "C" stamp and CAGE code available. - 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. Home Firearms Figuring Out Feed Ramps. Sent back again. For a better experience, please enable JavaScript in your browser before proceeding. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum Full M4 feed ramps start on the upper and continue onto the barrel extension. from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. so im thinking I might as well just get the unramp upper. You will be able to leave a comment after signing in, AR15Armory.com 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells Your link has been automatically embedded. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Get The Best Trigger Pull Gauges To Make Every Shot Count. Some suggest taking a grinder to the extension area. Go slow and you'll be done in no time. 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. Use this M4 Barrel extention with M4 feedramps. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. Lol. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log 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. M4 can better explain their benefit, although they help with more reliable feeding. Metal cases ammunition such as Wolf through an M4 clone? If you ever have an issue, then look at getting a correct barrel for the upper. The Fora platform includes forum software by XenForo. Would not feed to save its life! 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. M4 Feedramps - AR-15 Pro I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. The barrel is supposed to have the M4 feed ramps. Try this little exercise: 1. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. The photo shows the dents and the bolt lugs line up perfectly. BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. Thats true overall and good to keep in mind. Either way is good and both types work great with semi auto only guns. Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. 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 Feed ramps being m4 or. Adding feedramps - M4Carbine.net FN AR-15 5.56 NATO 20" Hammer Forged Barrel - Black Editors Note: This article was originally published in January of 2019. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. I wouldn't be concerned at all with any wear after modifying an upper receiver. By M4 barrel to non M4 receiver is fine, but not the other way around. All uppers are assembled cleaned and tested before shipping. So I called. m4 feed ramps - The Armorer - AR15Armory.com 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. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. Amazing what happens in a thread over a simple question. Feed ramps on barrel extensions are a good example. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. 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. These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. 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. The barrel blanks available are made from 416 Stainless Steel. 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. You also repeated yourself. "A Bad Day At The Range Is Better Than A Great Day Working". 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. Theres a bit more to it than just polishing. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE A shorter gas tube means reduced gas pressure, and we all know what happens when there isn't enough pressure to cycle the bolt carrier group properly.
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