adding m4 feed ramps to barrel

M4-style barrel extension with Rifle-type upper - Rifle - Technical Only took a few minutes. Home Firearms Figuring Out Feed Ramps. 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. April 23, 2014 in Rifle - Technical. Change the angle so that the ramp ends at the exact same point. No need to alter the upper. 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). Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . [WTB] Black A1 carry handle upper NON-m4 feed ramp $200 Previous. 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. I'm assuming that you only need the ramps from one or the other. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? This is one time it's better to go a little too far than to leave an edge for the . So, an M4 feed ramp includes the barrel extension and the upper. The M-16/M4 are great weapons. -The Barrel MUST be removed from the Upper Receiver in order to use this Kit.-Never cut or polish the aluminum M4 Feed Ramps in your upper receiver! I've shot a good deal of rounds through 20" A2's and I realize they run but you are describing issues that the M4 feed ramps alleviate, that would probably be good to reduce on A2's as well. And it appears that the bolt is slamming into the top of the bullet. Any use of this content without express written consent is prohibited. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. No Feed Ramps on upper? - General Discussion - 308AR.com Community Dec 17, 2020. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. Remember less is more, little by little. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Don't forget read more information about it here! And that is the important thing! If your upper isn't showing signs of bullets rubbing on the aluminum under the barrel extension, you should be good with M4 ramps. I have a non ramped barrel in a ramped upper, feeds fine. Modern Series Barrels. Modify AR15 A2 barrel extension for M4 feed ramp? The barrels also had to be modified. 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.) . On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. The barrel blanks available are made from 416 Stainless Steel. 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 The rifle-platform M16s dont use them. I got my help from this thread, and thank you again to ORD. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas Copyright 2016 - 2023 by AdventureFootstep.com. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. M4 ramps help in feeding in for carbine in full auto. It is milled out of 6061 T6. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. well.. it's kinda hard to get stuff in this part of the world. This 20" BCM barrel is machined from SS410 stainless steel. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Whether they materialize or not depends on the direction of the mismatch. I can probably get the upper reciever first. The barrel is supposed to have the M4 feed ramps. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. FFL Fax: 866-721-8691. Mil-spec is good for the masses, and if you want the job done it is a great start. The barrel Throat is the second most critical component after angles and should be polished with utmost care. I built the upper using a Mega upper with a Compass Lake 18" barrel. Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. 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 . Little polish. I use it for hunting dogs only. They . Avoid Polishing Too Lightly Or Too Roughly That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. We're a little past that point as I already own both the barrel and receiver, both of which cant easily be replaced or swapped for a decent price. Interesting reading. I can assure you that most mods that deviate from the original design aren't 100% reliable. Standard vs M4 Feed Ramps, what's the difference #1056 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. Can someone recommend or point me in the right direction of a good quality upper receiver for an SPR build that does not have M4 feed ramp cuts in it? So, an M4 feed ramp includes the barrel extension and the upper. All Rights Reserved. Does it make a big difference? Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. Press question mark to learn the rest of the keyboard shortcuts. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. As they are becoming more and more a standard, and certainly do not do any harm to us. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . I have seen it done many, MANY times and if done right, it works/functions 100% without issue. What is the difference between Modern, Performance, and Premium Series Barrels? It's an interesting question. M4 Feed ramps on barrel extensions are a solid example. Notify me of follow-up comments by email. Go back to writing school. AR9 - Help diagnosing feeding issue - Calguns.net Ideally both. M4 barrel to non M4 receiver is fine, but not the other way around. The photo shows the dents and the bolt lugs line up perfectly. so im thinking I might as well just get the unramp upper. 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 You can put a M4 barrel and non-M4 receiver together, but you can't mismatch them the other way. 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. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. Copyright 1996-2023 AR15.COM LLC. It may not display this or other websites correctly. 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? 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. Feed Ramps -300BlkTalk Most work performed while-you-wait, evening and saturday appointments available. Went back to the sellers website and found I was not the only one with problems. I prefer them. So the engineers lowered the feed rampa into the receiver. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). If I can correct an issue before it's an issue that is preferred. I will check with compass lake. 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. 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. They are better! Add 3% to the total cost for credit card purchases. 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 tip of the cartridge rarely comes into contact with the upper receiver. Adding feedramps - M4Carbine.net Guess what? I didnt think anything about it having M4 feed ramps. Feed ramp - Wikipedia Thanks! . You cannot paste images directly. /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. 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. 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. AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. 11.5", SBN, 1:7, 5.56 NATO Barrel You must log in or register to reply here. hey bro nice to see you here!!! For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. You are using an out of date browser. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. 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. 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. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). M16's fed pretty well before the M4 feed ramps were introduced. Any use of this content without express written consent is prohibited. Notice how the ramp starts on the barrel extension and not in the receiver. 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. Check often for fit. from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. Thats true overall and good to keep in mind. Also, barrel life is relative. The difference between standard feed ramps and M4 ramps is easy to see. Copyright 1996-2023 AR15.COM LLC. 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. I read in Bravo company that there are 2 kinds of flat top upper. Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Its a miracle! Feels like a silly question now that it makes sense. M4 Barrel Extension (M4 Feedramps) - Bravo Company USA The parts are interchangeable. I like getting another Upper idea then you could end up with two rifles! These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. M4 Feed ramps on barrel extensions are a solid example. By Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! Then the manufacturer discontinued the barrel. Create an account to follow your favorite communities and start taking part in conversations. 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. Both. instead of mil-spec. 30 cal. Get The Best Trigger Pull Gauges To Make Every Shot Count. Powered by Invision Community. Semi autos run slower than full autos. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. Clear editor. Theres a bit more to it than just polishing. Its also recommended you polish the ramps once youve achieved the appropriate angle. 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. CARBON-15 Stripped Lower Receiver If you have an account, sign in now to post with your account. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). For new construction barrels only. You will be able to leave a comment after signing in, AR15Armory.com M4 feed ramps. AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. Share it in the comments section. aaargh.. that's the setup I hate to see. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Looking For Bear Creek Arsenal Barrels Review? To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. The M4 was the first (allegedy) carbine length gas system. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. 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. check out the. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. All Rights Reserved. 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. Pasted as rich text. Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) Forged 7075-T6 aluminum is harder than a bulls balls. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. 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. Recommend using a gunsmith this route too if you are not comfortable. Only took a few minutes. Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist Sent back again. Sorta. This has been my concern with modifying the aluminum parts. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. They are also 1/7 twist, 4150 steel, chrome lined, and button rifled like the real deal! Bullets tend to bump, snag, and stub on these guns. Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum You need to match up barrels to receivers for optimum performance. It's best to have M4 ramps on both the upper and barrel. Proper maintenance and lubrication. 50 bucks one way or the other on the barrel ain't squat! I'm planning on replacing my forearm with a Larue 13.5. Is getting it as part of the upper better? The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. JavaScript is disabled. Gun smith said , not head spaced properly. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. 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-. Site towers are not "F" marked SPECS: Length- 14.5". The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. 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. 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. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. *Must have a registered ARFCOM account to win. Full M4 feed ramps are on both the upper and barrel extension. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. A couple of times I ended up with the OK set up from the picture above. Is it worth the extra 50 bucks?" I have looked and looked and looked. 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! Go slow and you'll be done in no time. 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. 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). "C" stamp and CAGE code available. A feed ramp is a basic feature of many breech loading cartridge firearm designs. 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 . 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. 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. I like all my guns to be reliable. We want you, our readers, to be able to make informed decisions. These units actually feature the NON-F-Marked (correct) front sight base. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Lol. 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. Feed ramps being m4 or. Barrel, sight and trigger work on most pistols and shotguns. Questions on how to install your new BA barrel? They were not intended to be super long range man killers. 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). 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. Your email address will not be published. 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. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. Experts advise on 31 degrees+30 minus-zip. All we do is dremmel it to match - we dont remove it and grind to any specific angle. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. My factory JP CTR-02 has the appearance of the bottom right picture in the post above, M4 barrel extension in a rifle receiver, and there is not a mark on the aluminum under the barrel extension. 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. So I called. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? again, Thanks. I think your mistaking that with adding ramps to the receiver. 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 have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Paste as plain text instead, What's the difference? Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. 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. If this is your first visit, be sure to This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. Brevity matters. 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 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). It is removeable with a special wrench and a barrel clamp/vise. 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. I recently picked up a barrel that I thought had M4 feed ramps, but it doesn't line up with my M4 feed ramp upper. 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'm a machinist in the aerospace industry and lucky enough to have. Press J to jump to the feed. 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). Your previous content has been restored. Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. For a better experience, please enable JavaScript in your browser before proceeding. 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. Some argue that, factually, its a step to enable a smoother feeding. 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.

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