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. AR Tech Tip - Checking M4 Ramps for overhang - YouTube The Mission of Cheaper Than Dirt! My alternative plan is to do exactly as you describe. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. 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. The tip of the cartridge rarely comes into contact with the upper receiver. 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've seen that pic, it is a good reference. 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. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper Go slow and you'll be done in no time. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Create an account to follow your favorite communities and start taking part in conversations. hey bro nice to see you here!!! Full M4 feed ramps start on the upper and continue onto the barrel extension. So, what is the difference between M4 feed ramps and regular ones? The barrel Throat is the second most critical component after angles and should be polished with utmost care. Feels like a silly question now that it makes sense. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? Looking For Bear Creek Arsenal Barrels Review? 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. can you buy feed ramps individually? I don't have much to add re: feed ramps, but. It is removeable with a special wrench and a barrel clamp/vise. 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! Would not feed to save its life! I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. In most cases the ramps only help during full auto mode while cycling at a high rate. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . Good call. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? 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. When you need to nail something you use a hammer not a wrench. Thread: Adding M4 feedramps to A1/C7 upper. P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull 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. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. There is a picture of the various options, hopefully another poster can link them. 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. 30 cal. 1 is a standard and the other for use with m4 feed ramp barrels. Editors Note: This article was originally published in January of 2019. JavaScript is disabled. Guess what? pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. By M4 barrel to non M4 receiver is fine, but not the other way around. 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. AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM Forged 7075-T6 aluminum is harder than a bulls balls. 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. AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16 A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. Upload or insert images from URL. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. Questions on how to install your new BA barrel? Read Now. Man, its crazy how many of yall have absolutely no idea why you do what you do. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Interesting reading. Required fields are marked *. EDIT: Okay, I understand now! Previous. You need to match up barrels to receivers for optimum performance. If this is your first visit, be sure to instead of mil-spec. Its also recommended you polish the ramps once youve achieved the appropriate angle. pictures would help. You need to match up barrels to receivers for optimum performance. is the m4 feedramp common in barrel extensions? Does it make a big difference? The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. Do you need an M4 feed ramp on your AR? Here is some info. 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. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. M4 feed ramps will extend the barrel extension and the upper receiver. They guide the bullet up and into the chamber. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. Clear editor. Reddit and its partners use cookies and similar technologies to provide you with a better experience. 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. AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. A couple of times I ended up with the OK set up from the picture above. Either way is good and both types work great with semi auto only guns. AR-15 Barrel Extension Question - Sniper's Hide Forum 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. If you consider this article useful, share it with anyone in need! 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. So, lets glide down these lines below to erase your misconceptions about them. Reliability is the main concern for me when I re-barrel this rifle. I'll probably build a pistol out of this one. Press J to jump to the feed. http://www.ar15fornoobs.com/wp-content/uploads/feedramps.jpg. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. upper recievers and barrels are hard to comeby. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). M4 Feedramps - AR-15 Pro M4 ramps help in feeding in for carbine in full auto. 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. 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. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Little polish. 5. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). I will check with compass lake. BCM 16" M4 Carbine Upper Receiver Group | BravoCompanyUSA I just need a little guidance on this and I'm having trouble getting good results from Google. Change the angle so that the ramp ends at the exact same point. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. 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. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. Making a non M4 feed ramp barrel work in an M4 feed ramp upper. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. What is the difference between Modern, Performance, and Premium Series Barrels? Theres a bit more to it than just polishing. Is one better than the other? They were not intended to be super long range man killers. And that is the important thing! 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.) . Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals Thats true overall and good to keep in mind. Feed ramps on barrel extensions are a good example. . So I called. 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. JavaScript is disabled. Feeds flawlessly. AR-15 Feed Ramp Problems - School of the American Rifle Check often for fit. Seems M4 is all the rage these days. I use it for hunting dogs only. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. All Rights Reserved. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. If you don't clean it but demand 3/4MOA you might get 1,500. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. 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. It's an interesting question. 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 For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 The best case is to have both an upper and barrel that have the feed ramps. 2. Should M4 feed ramps come with the barrel or upper? : r/ar15 - reddit Another reason is that any commercial receiver and parts makers want to tool up to make upper receivers and barrel extensions, especially when shorter guns are becoming more popular. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. 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 best to use rifle/rifle combo or M4/M4. Went back to the sellers website and found I was not the only one with problems. Gas block area is .750 diameter. 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. 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. It's best to have M4 ramps on both the upper and barrel. Rifle vs m4 feed ramps - AR15.COM Full M4 feed ramps are on both the upper and barrel extension. "C" stamp and CAGE code available. Amazing what happens in a thread over a simple question. 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 check out the. We have four combinations here: Your previous content has been restored. LanceRiley, 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. Copyright 1996-2023 AR15.COM LLC. RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC 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. The last is using the best and right ammo for the job. I can probably get the upper reciever first. 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. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Any use of this content without express written consent is prohibited. This 20" BCM barrel is machined from SS410 stainless steel. M4 Feed ramps on barrel extensions are a solid example. PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. Gun smith said , not head spaced properly. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. 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). Experts advise on 31 degrees+30 minus-zip. For a better experience, please enable JavaScript in your browser before proceeding. again, Thanks. Feed ramps being m4 or. Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist Barrel FAQs | Ballistic Advantage 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. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. You must log in or register to reply here. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. AR9 - Help diagnosing feeding issue. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. 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. 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. I guess it depends on what your relationship to the necessary shop activities is. "It will last 5k rounds instead of 4k. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Feed ramp - Wikipedia Copyright 2016 - 2023 by AdventureFootstep.com. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. I'm assuming that you only need the ramps from one or the other. However Ive built numerous ar15 and lr308 rifles and pistols. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. practical_man 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. I have looked and looked and looked. $101.95. So, what youre saying is that an M16 upper (not M4 cut) will work with either barrel, but an M4 cut upper will only work with an M4 cut barrel. A forum community dedicated to drag racing drivers and enthusiasts. 's blog. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About 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. No need to alter the upper. BrianEnos.com However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. 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 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. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. 11.5", SBN, 1:7, 5.56 NATO Barrel They . If it's happening regularly, check the magazines you are using for serviceability. Just because you can, doesn't mean you should. Brevity matters. 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. I didnt think anything about it having M4 feed ramps. CARBON-15 Stripped Lower Receiver Also, barrel life is relative. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. which is bad combo. Ideally both. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. Sorta. Married pretty well with my Seekins machined lower. Standard vs M4 Feed Ramps, what's the difference #1056 The first reason is that they are, indeed, better. I too built a .458 SOCOM carbine . #2. if you are OK with 3MOA, you might go 20,000 rounds! Del-Ton, Inc. AR-15 16" M4 Custom Upper If you ever have an issue, then look at getting a correct barrel for the upper. The photo shows the dents and the bolt lugs line up perfectly. Proper maintenance and lubrication. Is getting it as part of the upper better? Full M4 feed ramps start on the upper and continue onto the barrel extension. 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. M4 feed ramp barrel in a non M4 ramp upper - AR15.COM Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Modern Series Barrels. Ar15 Upper receivers A2 and Colt A1, M4 and - Northwest Firearms 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. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just 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. 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. 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?