adding m4 feed ramps to barrel

Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. Forged 7075-T6 aluminum is harder than a bulls balls. In most cases the ramps only help during full auto mode while cycling at a high rate. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. April 23, 2014 in Rifle - Technical. Barrel, sight and trigger work on most pistols and shotguns. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. FN AR15 barrels are hammer forged using the same proprietary high-grade Chrome Moly Vanadium steel used in FN's venerable machinegun barrels produced to handle the punishment of . 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. I've seen that pic, it is a good reference. Del-Ton, Inc. AR-15 16" M4 Custom Upper You cannot paste images directly. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps You must log in or register to reply here. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA aaargh.. that's the setup I hate to see. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. Standard vs M4 Feed Ramps, what's the difference #1056 Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Bear Creek Arsenal Barrels - 6.5 Grendel Type 2 Barrel This Gorilla Machining AR-15 16" heavy Black Nitride 6.5 Grendel barrel has a Carbine length gas system with a 1:8 twist. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. $101.95. Edited April 27, 2014 by Mark Gale Some suggest taking a grinder to the extension area. 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 rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. 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. BCM 16" M4 Carbine Upper Receiver Group | BravoCompanyUSA Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist 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. The ramps are in the barrel extension. 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. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just FWIW one of my rifles has M4 feed ramps on the barrel and no M4 feed ramps on the upper and it has functioned just fine. 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. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells So, an M4 feed ramp includes the barrel extension and the upper. Either way is good and both types work great with semi auto only guns. A closer look at uppers and barrel extensions. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. Its also recommended you polish the ramps once youve achieved the appropriate angle. I built the upper using a Mega upper with a Compass Lake 18" barrel. Create an account to follow your favorite communities and start taking part in conversations. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. Thread: Adding M4 feedramps to A1/C7 upper. 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 Here you can see an upper with "rifle" feedramps. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. Just because you can, doesn't mean you should. #2. are all barrels w/ m4 feed ramps?? Semi autos run slower than full autos. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. What is an m4 feed ramp? pictures would help. Add 3% to the total cost for credit card purchases. Do you need an M4 feed ramp on your AR? Here is some info. Which Model Colt 1911 is For Me? 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. 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. 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). We want you, our readers, to be able to make informed decisions. The difference between standard feed ramps and M4 ramps is easy to see. 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. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! For use by barrel manufacturers. My experience with ARs is all A-1s. 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. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. BrianEnos.com I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? Reliability is the main concern for me when I re-barrel this rifle. Rifle vs m4 feed ramps - AR15.COM colt A1E1 733 uppers didn't have extended carbine feedramps ? Theres a bit more to it than just polishing. RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC Powered by Invision Community, M4-style barrel extension with Rifle-type upper. Only took a few minutes. 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. Copyright 1996-2023 AR15.COM LLC. 3. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. Feeds flawlessly. 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. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. I'm a machinist in the aerospace industry and lucky enough to have. Man, its crazy how many of yall have absolutely no idea why you do what you do. I picked up a side charging upper from Sundevil last year. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. I wouldn't be concerned at all with any wear after modifying an upper receiver. It is removeable with a special wrench and a barrel clamp/vise. Upload or insert images from URL. 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. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. It's best to use rifle/rifle combo or M4/M4. 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Then you can get a regular rifle barrel for the upper with no ramps. I can assure you that most mods that deviate from the original design aren't 100% reliable. 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. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. Home Firearms Figuring Out Feed Ramps. So, I had purchased a 458 upper. 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. 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. Brevity matters. Caught a deal on a matched barrel and bolt. M4 can better explain their benefit, although they help with more reliable feeding. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. AR Tech Tip - Checking M4 Ramps for overhang - YouTube Check often for fit. 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. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. 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. Try this little exercise: 1. can the barrel extension be bought individualy? I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. It's an interesting question. FN AR-15 5.56X45mm Nato . 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 . Feed ramps on barrel extensions are a good example. You are using an out of date browser. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms By Yamil Sued August 6, 2021. In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. Feed ramps being m4 or. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. There's a 7 degree difference between standard and M4 ramps. Just put it in and shoot it. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. For new construction barrels only. AR9 - Help diagnosing feeding issue. I got my help from this thread, and thank you again to ORD. 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). CARBON-15 Stripped Lower Receiver I cant advise on that one folks. 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. what I fear the most is having an m4 ramp upper and then getting a barrel with a rifle ramp. 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. 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 M4, and the CAR-15, before it have had similar problems like the ones you mentioned. Single Action and Double Action Which One Is Better For You? I guess it depends on what your relationship to the necessary shop activities is. The Mission of Cheaper Than Dirt! The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. 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 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 (they're lowered). Create an account to follow your favorite communities and start taking part in conversations. This has been my concern with modifying the aluminum parts. Does anyone have a follow up that confirms or denies my claim? JavaScript is disabled. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. You need to match up barrels to receivers for optimum performance. No Feed Ramps on upper? - General Discussion - 308AR.com Community Either way is good and both types work great with semi auto only guns. Display as a link instead, Does NOT include pin 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 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.) . Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. So I'm working on my first build, and I'm a little confused. Thats true overall and good to keep in mind. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. M4 Feed ramps on barrel extensions are a solid example. The leading cause that leads to the development of the M4 feed ramp is the gas pressure from the carbine gas system that is increasing along with a high cyclic rate. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? 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). The magazine lips cannot move, so with these larger diameter cartridges, the bullet tips down lower about the centerline of the bore (half of the diameter increase to be exact). I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. Earlfillmore 13 hr. I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. Sent back again. 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? Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? I think your mistaking that with adding ramps to the 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. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. 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 I'm planning on replacing my forearm with a Larue 13.5. Issues can arise when receivers and barrel extensions are mismatched. The ramps on the regular rifle-type extension are cut just to the edge of the extension. 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. Share it in the comments section. Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. You wrote that much to make a point that should have taken about 100 words? 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! I don't have much to add re: feed ramps, but. You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. 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. Is getting it as part of the upper better? In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. so im thinking I might as well just get the unramp upper. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. Any use of this content without express written consent is prohibited. again, Thanks. Modern Series Barrels. 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. 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. One new winner* is announced every week! 11.5", SBN, 1:7, 5.56 NATO Barrel M16s and M16-A1s run at 750 rounds per minute in full auto. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. 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. As they are becoming more and more a standard, and certainly do not do any harm to us. 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). 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. Please be respectful of others. The barrel blanks available are made from 416 Stainless Steel. Product Description Surplus Colt 14.5" SOCOM, carbine length gas system barrel from Colt. Reddit and its partners use cookies and similar technologies to provide you with a better experience. All uppers are assembled cleaned and tested before shipping. By Then the manufacturer discontinued the 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. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. This is one time it's better to go a little too far than to leave an edge for the . Avoid Polishing Too Lightly Or Too Roughly I suggest you get a rifle receiver. Do you have an AR barrel or feed ramp tip? Please allow 5~10 days for assembly and testing before ship date. Ideally both. Finding the proper upper receiver is your best option. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. check out the. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. However, they do have M4 feed-ramps which is not clone correct. You want them to match. 's blog. The M-16/M4 are great weapons. If you ever have an issue, then look at getting a correct barrel for the upper. 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. So the engineers lowered the feed rampa into the receiver. 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? All comments are held for moderation and will appear after approval. Looking For Bear Creek Arsenal Barrels Review? AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle The mil actually only specs M4 feed ramps for use in its M4s. Use this M4 Barrel extention with M4 feedramps. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. Site towers are not "F" marked SPECS: Length- 14.5". Moreover, telling someone that an extension can be modified, while not a lie, is nothing more than mental masturbation when your post contains a caveat for having the knowledge and proper tools. if you are OK with 3MOA, you might go 20,000 rounds! VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. All Rights Reserved. And it appears that the bolt is slamming into the top of the bullet. Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd The Differences Between an M4 and an AR15 - Music Raiser M4 barrel to non M4 receiver is fine, but not the other way around. My alternative plan is to do exactly as you describe. Thank you for answering the question do well. I can still use the combination. The upper I want to rebarrel is modified for Service Rifle competition so it's not quite as cheap as buying another $89 upper from Aero. I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. ago KrinkyDink2 9 hr. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull Clear editor. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). The photo shows the dents and the bolt lugs line up perfectly. It was in the last few issues of SAR. Metal cases ammunition such as Wolf through an M4 clone?

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