Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. 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. Check often for fit. Our 6.5 Grendel Black Nitride rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy at a great price. instead of mil-spec. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. Paste as plain text instead, All Rights Reserved. Both. 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? The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. 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. I'll probably build a pistol out of this one. 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 barrel to non M4 receiver is fine, but not the other way around. 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. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? I'm a machinist in the aerospace industry and lucky enough to have. If a barrel comes with the feed ramps could I take them off? Any body need a anchor for a very small boat? I got my help from this thread, and thank you again to ORD. By In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. So, an M4 feed ramp includes the barrel extension and the upper. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. pictures would help. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. Questions on how to install your new BA barrel? Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. Ready to drop onto a complete lower receiver. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. Try this little exercise: 1. Brevity matters. . Experts advise on 31 degrees+30 minus-zip. Then you can get a regular rifle barrel for the upper with no ramps. Your link has been automatically embedded. Full M4 feed ramps start on the upper and continue onto the barrel extension. All NFA rules apply. Your email address will not be published. Thank you for answering the question do well. The barrel extension and the receiver both have to have the cuts. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. 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. Reliability is the main concern for me when I re-barrel this rifle. What is the difference between Modern, Performance, and Premium Series Barrels? They were not intended to be super long range man killers. 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. i have the rifle barrel. Some argue that, factually, its a step to enable a smoother feeding. 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! All we do is dremmel it to match - we dont remove it and grind to any specific angle. I suggest you get a rifle receiver. 3. The extension is the part at the end of the barrel that fits inside the upper. Interesting reading. We have four combinations here: Go back to writing school. I like getting another Upper idea then you could end up with two rifles! I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Feedramps, proper staking of castle nuts, forward assist (yep went there)S-happens seen it. 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. Watch a video about our Modern Series AR barrel: My alternative plan is to do exactly as you describe. As they are becoming more and more a standard, and certainly do not do any harm to us. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. My experience with ARs is all A-1s. 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). Press question mark to learn the rest of the keyboard shortcuts. I've seen that pic, it is a good reference. Ballistic Performance of Federal Punch .22 LR Ammunition with the Heritage Barkeep #1063. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Most of barrel assemblies and upper receivers on the market now have a present of M4 feed ramps. 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. *Must have a registered ARFCOM account to win. FN AR-15 5.56X45mm Nato . M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. Create an account to follow your favorite communities and start taking part in conversations. 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. Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. M4 can better explain their benefit, although they help with more reliable feeding. By ago KrinkyDink2 9 hr. Thread: Adding M4 feedramps to A1/C7 upper. After two months of back and forth, cleaned up the feed ramps. Share it in the comments section. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. 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. Is one better than the other? What's the difference? This has been my concern with modifying the aluminum parts. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces Modern Series Barrels. I use it for hunting dogs only. Thanks for explaining the feed ramp topic in a couple of different ways. "C" stamp and CAGE code available. One new winner* is announced every week! Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. Only took a few minutes. well.. it's kinda hard to get stuff in this part of the world. - The Shooter's Log, 2012 SHOT Show Special Report: Daniel Defense DDM4 V5 in .300 Blackout and a Factory SBR - The Shooter's Log, 2012 SHOT Show Special Report: SOG Armory Predator Rifle - The Shooter's Log, Surefire's 100-Round MAG5-100: The Highest Capacity AR-15 Magazine - The Shooter's Log, Throwback Thursday: Taurus Judge Range Report, ATI Milsport SGA 410 All the Advantages of an AR in .410, Ruger SR1911 LW Commander The Lightweight .45 ACP, Rifle Hack: Sighting for 100 Yards at a Distance of 25 Yards, Throwback Thursday: All About Bullet Grain. The M-16/M4 are great weapons. 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. EDIT: Okay, I understand now! Ideally both. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. 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. Either way is good and both types work great with semi auto only guns. Factory said its fine . Add 3% to the total cost for credit card purchases. I can assure you that most mods that deviate from the original design aren't 100% reliable. 1 is a standard and the other for use with m4 feed ramp barrels. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. Full M4 feed ramps start on the upper and continue onto the barrel extension. You need to match up barrels to receivers for optimum performance. Thats true overall and good to keep in mind. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. These units actually feature the NON-F-Marked (correct) front sight base. Please allow 5~10 days for assembly and testing before ship date. #2. I'm planning on replacing my forearm with a Larue 13.5. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. The photo shows the dents and the bolt lugs line up perfectly. This Kit is made to cut or polish the STEEL Feed Ramps on your Barrel Extension ONLY. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. 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 Its also recommended you polish the ramps once youve achieved the appropriate angle. LanceRiley, AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Sent back again. You have a rifle barrel. It's an interesting question. is the m4 feedramp common in barrel extensions? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. For a better experience, please enable JavaScript in your browser before proceeding. 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. By Yamil Sued August 6, 2021. Its a miracle! No need to alter the upper. And it appears that the bolt is slamming into the top of the bullet. 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. 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. Display as a link instead, 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. 2. 50 bucks one way or the other on the barrel ain't squat! Use this M4 Barrel extention with M4 feedramps. What is an m4 feed ramp? Notify me of follow-up comments by email. They are better! Thanks. Metal cases ammunition such as Wolf through an M4 clone? All Rights Reserved. BrianEnos.com Sorta. A4 Complete Upper Receiver. 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. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. M4 feed ramps are not an original design, they were designed for the M4 In fact, the . The mil actually only specs M4 feed ramps for use in its M4s. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. Create Account; Log Out ; Log In ; Wishlist 0; Shopping Cart 0; Home; About 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. 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. I will attest that a rifle upper and a barrel with the M4 feedramps works just fine. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. For a better experience, please enable JavaScript in your browser before proceeding. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. Feed ramps being m4 or. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. 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-. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Don't forget read more information about it here! 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. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. Most work performed while-you-wait, evening and saturday appointments available. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Earlfillmore 13 hr. So, an M4 feed ramp includes the barrel extension and the upper. The information provided here does not represent the views of Cheaper Than Dirt! Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . 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). Copyright 1996-2023 AR15.COM LLC. 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? The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. Feed ramps on barrel extensions are a good example. FFL Fax: 866-721-8691. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. You must log in or register to reply here. 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! The ramps are in the barrel extension. Read Now. 3. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? 308 m5 using m4 feed ramps, which I belive are for the smaller round like. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. This is one time it's better to go a little too far than to leave an edge for the . I didnt think anything about it having M4 feed ramps. 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. Previous. Any use of this content without express written consent is prohibited. Amazing what happens in a thread over a simple question. The last is using the best and right ammo for the job. I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. Thats receivers, bolts, and on down the list of the 100 or so parts that can make up an AR-15. 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 . This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. You have the option of barrel type, thread, fluting, finish type and to add a match bolt. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. check out the. If this is your first visit, be sure to M4 feed ramps. 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 . A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. I don't have much to add re: feed ramps, but. Feeds flawlessly. Recommend using a gunsmith this route too if you are not comfortable. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. 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? so im thinking I might as well just get the unramp upper. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. So, what is the difference between M4 feed ramps and regular ones? JavaScript is disabled.

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