All Rights Reserved. Using an upper with M4 feed ramps with a barrel that does not have them will lead to feed problems as it creates a ledge/lip that can catch the bullet tip as it tries to feed. 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. 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. Display as a link instead, Use this M4 Barrel extention with M4 feedramps. check out the. M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. AR9 - Help diagnosing feeding issue.
Cutting M4 feed ramps - Calguns.net I built the upper using a Mega upper with a Compass Lake 18" barrel.
[WTB] Black A1 carry handle upper NON-m4 feed ramp $200 Copyright 1996-2023 AR15.COM LLC. Your email address will not be published. They are better! Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. Damaged Ak front end Barrel in Trunnion with or without sight bases. I like getting another Upper idea then you could end up with two rifles! If this is your first visit, be sure to
Go back to writing school. Full M4 feed ramps are on both the upper and barrel extension. 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. 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 Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . A couple of times I ended up with the OK set up from the picture above. By Yamil Sued August 6, 2021. May 17, 2008 in The Armorer. Shorter length equates to much higher pressure in the upper receiver. 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. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? I prefer them. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. Full M4 feed ramps start on the upper and continue onto the barrel extension. M4 feed ramps will extend the barrel extension and the upper receiver. Here's some info from Randall Rauch aka www.ar15barrels.com, if your barrel extension has M4 ramps you should have an upper receiver also with the ramps. Modern Series Barrels. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. M4 ramps help in feeding in for carbine in full auto. Not all mil-spec features advertised on the product information are the real mil-specs. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. 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. I picked up a side charging upper from Sundevil last year. The first reason is that they are, indeed, better.
CUTTING M4 RAMPS - YouTube He had more to say and added some more engineer and gun designer speak too. In short, if you have a Dremmel you can do it yourself. 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. One of the AR15 engineers under Gene Stoner pretty much said that the M4 isn't a good platform, especially once the gas port erodes a bit. 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? 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. 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.
Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper Its also recommended you polish the ramps once youve achieved the appropriate angle. It may not display this or other websites correctly. If I can correct an issue before it's an issue that is preferred. Also, barrel life is relative. Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine.
Adding feedramps - M4Carbine.net 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. For use by barrel manufacturers.
Barrel FAQs | Ballistic Advantage Remember less is more, little by little. 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. 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. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII). 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. Finding the proper upper receiver is your best option. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? 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 . There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. The manufacturer said they had sold hundreds of barrels with out problems reported.
M4-style barrel extension with Rifle-type upper - Rifle - Technical I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. If you have a bolt that you would like to use you are welcome to ship it to us for accurate headspace. What is an m4 feed ramp?
Colt LE6920SOCOM M4 Carbine 5.56 16.1 Barrel SOCOM Sight 30-rd I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. 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. All uppers are assembled cleaned and tested before shipping. Barrel customizations are also available. Issues can arise when receivers and barrel extensions are mismatched. I guess it depends on what your relationship to the necessary shop activities is. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. Please be respectful of others. The extension is the part at the end of the barrel that fits inside the upper. Given that most of us dont always have perfect access to truly genuine Mil-Spec, mil-standard parts (those actually used in issued fighting tools), were shopping based on a little part trust and a bigger part knowledge. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. It is removeable with a special wrench and a barrel clamp/vise. I can probably get the upper reciever first. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. are all barrels w/ m4 feed ramps?? Only took a few minutes. For a better experience, please enable JavaScript in your browser before proceeding. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. 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. All Rights Reserved. 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. Thanks.
M4 Feedramps - AR-15 Pro Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. When you need to nail something you use a hammer not a wrench. Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About But, as with anything else, this work can go too far. FN AR-15 5.56X45mm Nato . 4. Thanks for explaining the feed ramp topic in a couple of different ways.
Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals 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.
I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? *Must have a registered ARFCOM account to win. I have looked and looked and looked. Sorta. You have a rifle barrel. 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! The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel.
14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells The barrel blanks available are made from 416 Stainless Steel. Required fields are marked *. M4 Feed ramps on barrel extensions are a solid example.
m4 feed ramps - The Armorer - AR15Armory.com M4 feed ramp barrel in a non M4 ramp upper - AR15.COM Would not feed to save its life! 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. Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. So, an M4 feed ramp includes the barrel extension and the upper. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. One new winner* is announced every week! Site towers are not "F" marked SPECS: Length- 14.5".
M4 Barrel Extension (M4 Feedramps) - Bravo Company USA $101.95. Married pretty well with my Seekins machined lower. Seems like it should work to me, but be a real challenge to keep clean and be damned ugly to boot. 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 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?
How to Polish a Feedramp Quick and Easy | Firearms Talk M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces Lol. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. Here you can see an upper with "rifle" feedramps. The difference between standard feed ramps and M4 ramps is easy to see. Press question mark to learn the rest of the keyboard shortcuts.
BCM 16" M4 Carbine Upper Receiver Group | BravoCompanyUSA It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo.
AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. Feed ramps being m4 or. Most work performed while-you-wait, evening and saturday appointments available. I got my help from this thread, and thank you again to ORD. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. 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. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. Notify me of follow-up comments by email. Amazing what happens in a thread over a simple question. The ramps on the regular rifle-type extension are cut just to the edge of the extension. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Just because you can, doesn't mean you should. Either way is good and both types work great with semi auto only guns. . 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. As suggested, its best to match the upper and barrel extension no worries that way. True, which is why they're not even needed in semi autos. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? I notice that's a Gibbz (or Gibbz-type) upper. 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. It gives a longer ramp that is less steep into the chamber. 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.) .
M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. 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. The Mission of Cheaper Than Dirt! In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. 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. 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). Watch a video about our Modern Series AR barrel: Theres a bit more to it than just polishing. Barrel, sight and trigger work on most pistols and shotguns. Any use of this content without express written consent is prohibited. 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. Only took a few minutes. For a better experience, please enable JavaScript in your browser before proceeding. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. So I'm working on my first build, and I'm a little confused.
Feed ramp - Wikipedia 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. Sent back again. Some suggest taking a grinder to the extension area. 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. 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. In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! 1 is a standard and the other for use with m4 feed ramp barrels. Is one better than the other? Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . -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!
Making a non M4 feed ramp barrel work in an M4 feed ramp upper. 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.
DoubleStar M4 clone opinions | Survivalist Forum 2. Feed ramps on barrel extensions are a good example. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. Both. Well, over the course of 5,000 rounds at .40 a round, you spent two grand on ammo. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts.
PRI MK 12 Mod H 16" 223/5.56 Upper w/ 1-7 twist Ideally both.
No Feed Ramps on upper? - General Discussion - 308AR.com Community You can run M4 cut barrels with rifle receivers, but not the other way around as it will create at catch that can hang up the bullets. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. 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. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. "It will last 5k rounds instead of 4k. First of Im not a gunsmith or firearms professional. 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. A feed ramp is a basic feature of many breech loading cartridge firearm designs. This can lead to a rare but odd situation; barrel and receiver mismatch. All things being equal and having used both weapons extensively, Id rather have the feed Ramps.
Modify AR15 A2 barrel extension for M4 feed ramp? You can post now and register later. While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on.
I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. ago KrinkyDink2 9 hr. Upload or insert images from URL. Barrels are Douglas 416 stainless steel with 1-7 twist with M4 feed ramps AR Tech Tip - Checking M4 Ramps for overhang School of the American Rifle 84.8K subscribers Subscribe 2.9K 90K views 2 years ago AR Tech Tip - Checking M4 Ramps for overhang Show more Show more. practical_man For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. DSA has fat top, Mueller, non feed ramp uppers for $40. I have done the same, protect the Barrel extension with a layer of electrical tape and carefully file or Dremel the ramps into the aluminum receiver. Experts advise on 31 degrees+30 minus-zip. I'm assuming that you only need the ramps from one or the other. 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). Semi autos run slower than full autos. If it's happening regularly, check the magazines you are using for serviceability. Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. Reliability is the main concern for me when I re-barrel this rifle. I had seen these pix years ago and dismissed the idea of mix and match. Single Action and Double Action Which One Is Better For You? 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. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting.
Getting the AR Barrel and Receiver Configuration Correct The M4 was the first (allegedy) carbine length gas system. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? What's the difference? Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. 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. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. Is it worth the extra 50 bucks?" Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. The barrel is supposed to have the M4 feed ramps. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. 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 I called. hey bro nice to see you here!!! Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. This has been my concern with modifying the aluminum parts. aaargh.. that's the setup I hate to see. Good call. which is basicallly an m16a1 cut down. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. The reason I decided to write about this topic at all was because there are some mil-spec features advertised on aftermarket parts that arent even really mil-spec. 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. "C" stamp and CAGE code available.
Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum For new construction barrels only. Copyright 2016 - 2023 by AdventureFootstep.com. Ready to drop onto a complete lower receiver. Which Model Colt 1911 is For Me? Reddit and its partners use cookies and similar technologies to provide you with a better experience. Editors Note: This article was originally published in January of 2019. well.. it's kinda hard to get stuff in this part of the world. Your previous content has been restored. I've seen that pic, it is a good reference. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. 50 bucks one way or the other on the barrel ain't squat! Notice how the ramp starts on the barrel extension and not in the receiver. 3. Description. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
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-. A closer look at uppers and barrel extensions. JavaScript is disabled. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. If you aren't 110% comfortable with doing the job, and you do not have all the tools and equipment to do it properly, then have a smith do it for you. 30 cal. The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. I too built a .458 SOCOM carbine . BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. I wouldn't be concerned at all with any wear after modifying an upper receiver. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. That's an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched.
RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). It's best to use rifle/rifle combo or M4/M4. I have a non ramped barrel in a ramped upper, feeds fine. I don't have much to add re: feed ramps, but. I just need a little guidance on this and I'm having trouble getting good results from Google. M4 Feed ramps on barrel extensions are a solid example. colt A1E1 733 uppers didn't have extended carbine feedramps ? Add 3% to the total cost for credit card purchases. The mil actually only specs M4 feed ramps for use in its M4s. Its a miracle! I'm planning on replacing my forearm with a Larue 13.5.