adding m4 feed ramps to barrel
which is basicallly an m16a1 cut down. Adding feedramps - M4Carbine.net 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 . Semi autos run slower than full autos. 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. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. All Rights Reserved. Full M4 feed ramps are on both the upper and barrel extension. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Description Genuine 14.5" SOCOM, carbine length gas system barrel from Colt. RTS Bartlein: 6mm ARC 26" - Compass Lake Engineering, LLC The Fora platform includes forum software by XenForo. 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. What is an m4 feed ramp? This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. Add M4 cuts to Barrel Ext $15.00 We can modify your rifle extension to match the M4 cuts in an upper receiver. Should M4 feed ramps come with the barrel or upper? : r/ar15 - reddit 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've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. Some barrels I see for sale say they include M4 feed ramps, and some uppers say they include them too. Thats true overall and good to keep in mind. BCM 14.5" MK2 Upper (Standard) w/ 13" MLOK Handguard - FDE I had seen these pix years ago and dismissed the idea of mix and match. Its also recommended you polish the ramps once youve achieved the appropriate angle. 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. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. Rear side of a CZ-75B pistol barrel showing the (here dirty) feed ramp. One new winner* is announced every week! They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. The ramps on the regular rifle-type extension are cut just to the edge of the extension. You need to match up barrels to receivers for optimum performance. CUTTING M4 RAMPS - YouTube Feed Ramp Polishing - How To Do It Properly? - Homestead & Prepper I can assure you that most mods that deviate from the original design aren't 100% reliable. Another reason is that any commercial receiver and parts makers want to tool up to make upper receivers and barrel extensions, especially when shorter guns are becoming more popular. instead of mil-spec. I've been thinking about doing sort of an "Early Diemaco C8 carbine" clone build with a C7 style upper receiver. AR-15 feed ramp issues - Rifle - Technical - Brian Enos's Forums Gas block area is .750 diameter. FFL Fax: 866-721-8691. 30 cal. The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. AR15 Feed Ramp Cut & Polish Kit - School of the American Rifle I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? I picked up a side charging upper from Sundevil last year. I have a non ramped barrel in a ramped upper, feeds fine. Looking for a black stripped A1 upper with non m4 feed ramps (just realized the upper I have wont work with my barrel). Looking to spend $180-250 (depending on condition, forge mark and if a rear sight is included or not.) from my service in the 70s to my personal weapons, all of my ARs are early 1970 slab sided Colt SP1s. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. "C" stamp and CAGE code available. Create an account to follow your favorite communities and start taking part in conversations. Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. Thanks for explaining the feed ramp topic in a couple of different ways. For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. 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. 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. Copyright 1996-2023 AR15.COM LLC. M16's fed pretty well before the M4 feed ramps were introduced. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. Only took a few minutes. 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. and add them to non-m4 barrels.? If you ever have an issue, then look at getting a correct barrel for the upper. Clear editor. Good call. Description. Get The Best Trigger Pull Gauges To Make Every Shot Count. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. The barrel extension and the receiver both have to have the cuts. For a better experience, please enable JavaScript in your browser before proceeding. 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. 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). Avoid Polishing Too Lightly Or Too Roughly 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. Everything that you have on your side to make any weapons more reliable and work when it absolutely needs to is a plus. 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. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. How long your barrel "lasts" depends on what your accuracy threshold is before you decide it is too bad to keep using. 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. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . The best case is to have both an upper and barrel that have the feed ramps. If a barrel comes with the feed ramps could I take them off? 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. If you have an account, sign in now to post with your account. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. They . Is getting it as part of the upper better? So, what is the difference between M4 feed ramps and regular ones? Site towers are not "F" marked SPECS: Length- 14.5". ago KrinkyDink2 9 hr. Contents: 1 Diamond Burr (For Colt 2 Stage Ramps) 1 Cut Lube (For Diamond Burr) 1 Bullet Stone (For Reshaping . By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. 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. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. They provide a lower, wider, and smoother entry for any round of ammo, whether its necessary or not. One new winner* is announced every week! 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. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. Feed Ramps -300BlkTalk As suggested, its best to match the upper and barrel extension no worries that way. M4 barrel to non M4 receiver is fine, but not the other way around. Those ramps line up with the barrel, which are cut deeper than on a rifle barrel. 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. Create an account to follow your favorite communities and start taking part in conversations. Add 3% to the total cost for credit card purchases. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. 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. I should have taken my own advice for once. EDIT: Okay, I understand now! I like all my guns to be reliable. LanceRiley, Konza Defender M-LOK 5.56 16" Rifle 1x7 FEATURES: 16" 4150 Nitride 1x7 5.56 Barrel T-Marked Upper with M4 Feed Ramps Steel Micro Gas Block, and Carbine Length Gas Tube 15" 7075 T6 Aluminum Free Float M-LOK Hand Guard A2 Muzzle Break BCG is an M16 Style Nitride QPQ Finish Charging Handle Mil-Spec 6 Position Mil-Spec Diameter Stock Any body need a anchor for a very small boat? No feed ramps. Finding the proper upper receiver is your best option. Recommend using a gunsmith this route too if you are not comfortable. $101.95. 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. 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. Del-Ton, Inc. AR-15 16" M4 Custom Upper I would just make sure to order rifle upper with rifle barrel extension or M4 upper with M4 barrel extension. 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? Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Remember less is more, little by little. 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 . These Mil-Spec M4 feed ramps are part of the original CNC manufacturing process. Upper Receiver WITHOUT M4 Feed Ramp Cuts? - Sniper's Hide Forum 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. In short, if you have a Dremmel you can do it yourself. Modern Series Barrels. I cant advise on that one folks. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. Caught a deal on a matched barrel and bolt. 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. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. Notice how the ramp starts on the barrel extension and not in the receiver. Its a miracle! Figuring Out Feed Ramps | Feed Ramp Tips | The Shooter's Log 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. Do you need an M4 feed ramp on your AR? Here is some info. I got my help from this thread, and thank you again to ORD. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. The mil actually only specs M4 feed ramps for use in its M4s. I notice that's a Gibbz (or Gibbz-type) upper. The extension is the part at the end of the barrel that fits inside the upper. My experience with ARs is all A-1s. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. Barrel FAQs | Ballistic Advantage 3. 11.5", SBN, 1:7, 5.56 NATO Barrel AAC and anybody else that has any reasonable expectation of quality and reliability use an M4 feed ramp. It's an interesting question.