All Rights Reserved. You absolutely do not want it the other way around however. No feed ramps. - 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. Went back to the sellers website and found I was not the only one with problems.
M855A1 5.56mm NATO Penetrator Ammo Feed Ramp Issues: Real, Hype or just JavaScript is disabled. There is a picture of the various options, hopefully another poster can link them. Site towers are not "F" marked SPECS: Length- 14.5". In most cases the ramps only help during full auto mode while cycling at a high rate. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. I have looked and looked and looked. For new construction barrels only. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. 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 I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. However, they do have M4 feed-ramps which is not clone correct. 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). 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. and add them to non-m4 barrels.? . I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. . Absolutely nothing to do with casing diameter, or whatever other weird sht you guys imagine. well.. it's kinda hard to get stuff in this part of the world. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. The barrel is supposed to have the M4 feed ramps. ago KrinkyDink2 9 hr. I found the article very informative. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. 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 Either way is good and both types work great with semi auto only guns. Good call. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. 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. The barrel Throat is the second most critical component after angles and should be polished with utmost care. Some argue that, factually, its a step to enable a smoother feeding. Thread: Adding M4 feedramps to A1/C7 upper. And it appears that the bolt is slamming into the top of the bullet. 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. Use this M4 Barrel extention with M4 feedramps. 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. M4 Feed ramps on barrel extensions are a solid example. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells Do you have an AR barrel or feed ramp tip? Any use of this content without express written consent is prohibited.
DoubleStar M4 clone opinions | Survivalist Forum To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. Editors Note: This article was originally published in January of 2019. 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 is milled out of 6061 T6. check out the.
M4 Barrel Extension (M4 Feedramps) - Bravo Company USA 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 They are better! When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. Feels like a silly question now that it makes sense. 50 bucks one way or the other on the barrel ain't squat! 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.) . 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.
Modify AR15 A2 barrel extension for M4 feed ramp? The upper is designed to have two levels of top rails for mounting of night vision in front of scopes. All NFA rules apply. So, I had purchased a 458 upper. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. Theres a bit more to it than just polishing. M4 barrel to non M4 receiver is fine, but not the other way around. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? These units actually feature the NON-F-Marked (correct) front sight base. 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. 2. Full M4 feed ramps start on the upper and continue onto the barrel extension. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. this is the barrel designed and profiled for the Mark 12 Mod 0 uppers and rifles. I'd rather just pay the gunsmith to make it work than hunt down another barrel/upper if possible. Dec 17, 2020. Create an account to follow your favorite communities and start taking part in conversations. Description. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. 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 . The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in.
Feed ramp - Wikipedia Modern Series Barrels. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. 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. Home Firearms Figuring Out Feed Ramps. Full M4 feed ramps start on the upper and continue onto the barrel extension. Thanks! Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. Both.
M4-style barrel extension with Rifle-type upper - Rifle - Technical Feed Ramps -300BlkTalk Issues can arise when receivers and barrel extensions are mismatched. Only took a few minutes. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. So I'm working on my first build, and I'm a little confused. What's the difference? This is one time it's better to go a little too far than to leave an edge for the . 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. However, its rare now to find an upper receiver or a ready-to-go barrel that doesnt have the M4 cuts. M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces Whether they materialize or not depends on the direction of the mismatch. However Ive built numerous ar15 and lr308 rifles and pistols. The M4, and the CAR-15, before it have had similar problems like the ones you mentioned. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. Jams and misfires. Factory said its fine . I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. For the purposes of this chapter, we'll call the new one the M4, and the old one the AR. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. 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? Here you can see an upper with "rifle" feedramps. Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous, superchargers, and more! Barrel customizations are also available. I think your mistaking that with adding ramps to the receiver. so it is better to have an upper reciever that's designed for non-m4 feed ramps since you can put in standard barrels right? what does it do?? I am having a tough time finding an in-stock barrel (18 or 20 incher) with a rifle extension on it. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. Earlfillmore 13 hr. 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.
What Are M4 Feed Ramps and What Is The Benefit Of It? - Adventure Footstep As a result, the factory machined M4 feed ramps on the receiver are hard coat anodized which adds significant strength to the aluminum. 3. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. Please be respectful of others. 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. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. In case My barrel is rifle ramp it won't be so bad after all. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. Brevity matters. All uppers are assembled cleaned and tested before shipping. The only one I found is LaRue's upper, but it won't work with the hand guard I'm using (Geissele MKIII).
PSA PA-15 16"M4 Phosphate 5.56 NATO 1/7 Classic AR-15 Rifle with 13.5"M 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? If it's happening regularly, check the magazines you are using for serviceability. Its a miracle! So, an M4 feed ramp includes the barrel extension and the upper.
I have a non ramped barrel in a ramped upper, feeds fine. Seems M4 is all the rage these days. Should not be too hard. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. A couple of times I ended up with the OK set up from the picture above. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. 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). from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. 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. Caught a deal on a matched barrel and bolt. I built the upper using a Mega upper with a Compass Lake 18" barrel. The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. Little polish. Barrel is medium SPR profiled barrel, threaded with a 1/2-28 thread for the AE brakes and collar. 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.
BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Which Model Colt 1911 is For Me? The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. hey bro nice to see you here!!! 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. 2. . If I can correct an issue before it's an issue that is preferred. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. This has been my concern with modifying the aluminum parts.
AR15 20 inch Upper Receiver Group (SS) w/ Handguard | BCM You are using an out of date browser.
BCM 16" M4 Carbine Upper Receiver Group | BravoCompanyUSA pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. if you are OK with 3MOA, you might go 20,000 rounds! Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? The best case is to have both an upper and barrel that have the feed ramps. 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. M4 Feed ramps on barrel extensions are a solid example. Full M4 feed ramps are on both the upper and barrel extension. "It will last 5k rounds instead of 4k. He had more to say and added some more engineer and gun designer speak too. The ramps on the regular rifle-type extension are cut just to the edge of the extension. We want you, our readers, to be able to make informed decisions. 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. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. Paste as plain text instead, M16's fed pretty well before the M4 feed ramps were introduced. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. For use by barrel manufacturers. M4 feed ramps will extend the barrel extension and the upper receiver. The Fora platform includes forum software by XenForo.
FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. Buy AR 15 16" .350 Legend Nitride M4 Profile Barrel 1:16: GunBroker is the largest seller of AR15 Parts Gun Parts All: 974000728 . Not all mil-spec features advertised on the product information are the real mil-specs. Its not a big deal but still an important thing to remember and understand. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Anodized red parts. 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.
AR9 - Help diagnosing feeding issue - Calguns.net Remember less is more, little by little. Metal cases ammunition such as Wolf through an M4 clone? Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. So the engineers lowered the feed rampa into the receiver. "A Bad Day At The Range Is Better Than A Great Day Working". Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. LanceRiley, Previous. It is removeable with a special wrench and a barrel clamp/vise. Feeds flawlessly. Read Now. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. 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.
P2A PATRIOT 22" 223 Wylde 1/7 Rifle Length Melonite Fluted Heavy Bull Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) I recently built an AR9 (Glock Mags) that has been running flawlessly for about 3-400rds. Moreover, telling someone that an extension can be modified, while not a lie, is nothing more than mental masturbation when your post contains a caveat for having the knowledge and proper tools. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. 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. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. 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. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. The closest brand new barrel you are likely to find is the Windham Weaponry 20 inch 1/7 twist chrome lined barrel. Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here Share your latest AR build or photos from the range with #RangeDayFriday for a chance to win a new firearm! i have the rifle barrel. Does it make a big difference?
AR Tech Tip - Checking M4 Ramps for overhang - YouTube After two months of back and forth, cleaned up the feed ramps. I like all my guns to be reliable. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect.
Surplus Colt 14.5 M4 SOCOM Carbine Barrel 1/7 Twist What is the difference between Modern, Performance, and Premium Series Barrels? 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. Is it worth the extra 50 bucks?" 16" Pre-Ban M4 Profile Barrel Assembly CARBINE Gas System About Upper assembly comes completely head spaced and test fired. The leading cause that leads to the development of the M4 feed ramp is the gas pressure from the carbine gas system that is increasing along with a high cyclic rate. 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. Please allow 5~10 days for assembly and testing before ship date. -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! Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. If you consider this article useful, share it with anyone in need! 308 m5 using m4 feed ramps, which I belive are for the smaller round like. I got my help from this thread, and thank you again to ORD. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. 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. The upper I want to rebarrel is modified for Service Rifle competition so it's not quite as cheap as buying another $89 upper from Aero. "C" stamp and CAGE code available. Reddit and its partners use cookies and similar technologies to provide you with a better experience. It's best to use rifle/rifle combo or M4/M4. All Rights Reserved. You will be able to leave a comment after signing in, AR15Armory.com The parts are interchangeable. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? I had seen these pix years ago and dismissed the idea of mix and match. Press question mark to learn the rest of the keyboard shortcuts. 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. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin.
This can lead to a rare but odd situation; barrel and receiver mismatch. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. I've seen that pic, it is a good reference. M4 feed ramps. 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. 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. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. I guess it depends on what your relationship to the necessary shop activities is. The manufacturer said they had sold hundreds of barrels with out problems reported. #2. The M-16/M4 are great weapons. April 23, 2014 in Rifle - Technical. 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. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top).
Cutting M4 feed ramps - Calguns.net 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. The barrel blanks available are made from 416 Stainless Steel. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. M4 Barrel Extension (M4 Feedramps) $22.95 (4 reviews) SKU: Barrel-Extension-M4 Stock Status: Quantity: Add to Wish List Description For your AR15, M16, M4. There's a 7 degree difference between standard and M4 ramps. Reddit and its partners use cookies and similar technologies to provide you with a better experience. 3. DSA has fat top, Mueller, non feed ramp uppers for $40. Avoid Polishing Too Lightly Or Too Roughly When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). Any use of this content without express written consent is prohibited.