FFL Fax: 866-721-8691. Costs about $40-50 to have the feed ramps reprofiled from what I can gather. 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. All Rights Reserved. Either way is good and both types work great with semi auto only guns. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? . Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. Its easier to add feed ramps to the receiver not so easy to add them to the barrel extension. I read in Bravo company that there are 2 kinds of flat top upper. Barrel customizations are also available. Description. Forged 7075-T6 aluminum is harder than a bulls balls. Check often for fit. Earlfillmore 13 hr. The dimensions are different between the two, so theyd have to change some things to the feed ramps dimensions. FN AR-15 5.56X45mm Nato 14.70" M4 Profile Barrel Carbine Length Gas Thats an important thing since without the feed ramps, issues can arise when receivers and barrel extensions are mismatched. 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. 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. The Shooter's Log, is to provide informationnot opinionsto our customers and the shooting community. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . It may not display this or other websites correctly. Im an old vet, now retired and looking to build some ARs as a hobby to keep me doing something that I will enjoy. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. First of Im not a gunsmith or firearms professional. 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-. Went back to the sellers website and found I was not the only one with problems. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. Thats true overall and good to keep in mind. Seems M4 is all the rage these days. M4 Feed ramps on barrel extensions are a solid example. It's near impossible to replace the carry handle upper I have these days, and finding a colt chrome lined 20" light weight barrel isn't a walk in the park either. The barrels also had to be modified. 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). I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Jams and misfires. There is a picture of the various options, hopefully another poster can link them. You also repeated yourself. In case My barrel is rifle ramp it won't be so bad after all. Reddit and its partners use cookies and similar technologies to provide you with a better experience. 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). 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. 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. All NFA rules apply. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? what does it do?? Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. When you need to nail something you use a hammer not a wrench. That is what I tell people when they try to convince me that they need a stainless barrel instead of chrome-moly. Experts advise on 31 degrees+30 minus-zip. Ideally both. The M4 receiver feed ramps are cut at a steeper angle and, as a result, extend down into the receiver wall. instead of mil-spec. All things being equal and having used both weapons extensively, Id rather have the feed Ramps. For someone who is new at trying to understand feed ramps it helps to read a couple different explanations. Bullets tend to bump, snag, and stub on these guns. No feed ramps. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. It has ran flawlessly (barring tuning of the gasblock when new) with several different brands of magazines and ammo. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. 3. You have a rifle barrel. I wouldn't be concerned at all with any wear after modifying an upper receiver. Pasted as rich text. 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. 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. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. Please be respectful of others. Dec 17, 2020. Do you need an M4 feed ramp on your AR? Here is some info. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. Gun smith said , not head spaced properly. 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). 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. Press question mark to learn the rest of the keyboard shortcuts. 50 bucks one way or the other on the barrel ain't squat! The mil actually only specs M4 feed ramps for use in its M4s. Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg. Try this little exercise: 1. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. There are now thousands of upper receivers and ready-to-use barrels that have the cuts of M4 feed ramps. I picked up a side charging upper from Sundevil last year. Create an account to follow your favorite communities and start taking part in conversations. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. 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 M4, and the CAR-15, before it have had similar problems like the ones you mentioned. Getting the AR Barrel and Receiver Configuration Correct A couple of times I ended up with the OK set up from the picture above. 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. ago Costs about $40-50 to have the feed ramps reprofiled from what I can gather. M4 feed ramp barrel in a non M4 ramp upper - AR15.COM Your previous content has been restored. 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 . aaargh.. that's the setup I hate to see. These units actually feature the NON-F-Marked (correct) front sight base. And it appears that the bolt is slamming into the top of the bullet. 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. So I called. 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. This includes M4 feed ramps, barrel nut, front sight tower and sight post, and -28 threads for a muzzle device. Notice how the ramp starts on the barrel extension and not in the receiver. 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. I like getting another Upper idea then you could end up with two rifles! Higher pressure equte to parts (bcg, buffer, buffer spring, ROUNDS, etc) experiencing much higher wear/tear. The Mission of Cheaper Than Dirt! which is bad combo. 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. A4 Complete Upper Receiver - 7075 Forged A4 Flat Top Upper Receiver - M4 Feed Ramps Includes: - Add to Cart. 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. As suggested, its best to match the upper and barrel extension no worries that way. I too built a .458 SOCOM carbine . There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. A forum community dedicated to drag racing drivers and enthusiasts. I checked what I have now. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! A couple of times I ended up with the OK set up from the picture above. As they are becoming more and more a standard, and certainly do not do any harm to us. BUT, I DO NOT TRUST MY LIFE TO THAT WEAPON. 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. Adding feedramps - M4Carbine.net If you have an account, sign in now to post with your account. Now move move the on deck cartridge forward to the 3/8 of inch position and again note the position of the tip of the bullet in relationship to the barrel extension. Related: If you are using a Ar rifle, best green laser sight is good choice for hunting. It's best to use rifle/rifle combo or M4/M4. 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 AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. I suggest you get a rifle receiver. "A Bad Day At The Range Is Better Than A Great Day Working". Was sort of worried about how it would run with an 11.5" barrel and mismatched ramps, but it sounds like it should be good to go either way. DSA has fat top, Mueller, non feed ramp uppers for $40. well.. it's kinda hard to get stuff in this part of the world. By Watch a video about our Modern Series AR 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! 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). Would not feed to save its life! Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? 14.5" M4 SOCOM Barrel Assembly with Sight Tower - Brownells Backing up a ton: Any and all AR-15 barrel extensions have feed ramps. The barrel is supposed to have the M4 feed ramps. Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. April 23, 2014 in Rifle - Technical. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. You want them to match. I should have taken my own advice for once. Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. Looking For Bear Creek Arsenal Barrels Review? The good idea is that the round, presented at a lower plane, will contact other lower feed ramps and go right on in. Single Action and Double Action Which One Is Better For You? Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types. Copyright 1996-2023 AR15.COM LLC. 1 is a standard and the other for use with m4 feed ramp barrels. It is removeable with a special wrench and a barrel clamp/vise. Our 6mm ARC barrel come standard with 1-7.5 Twist, M4 Feed Ramps and gas tube. Most work performed while-you-wait, evening and saturday appointments available. DoubleStar M4 clone opinions | Survivalist Forum It gives a longer ramp that is less steep into the chamber. Issues can arise when receivers and barrel extensions are mismatched. upper recievers and barrels are hard to comeby. You absolutely do not want it the other way around however. By the time you made it work you spent more time, money, and effort than if you just bought a new barrel or upper. Do you have an AR barrel or feed ramp tip? Konza Defender M-LOK 5.56 16" Rifle - $399.99 | gun.deals Get The Best Trigger Pull Gauges To Make Every Shot Count. So, what is the difference between M4 feed ramps and regular ones? By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. And that the M4s and M4A1s are issued M855 which has a slight difference in bullet shape vs. the older 55gr M193 BALL. Load a magazine with two or three rounds, lock the bolt group back on your rifle or carbine and insert the magazine. The M-16/M4 are great weapons. Lol. Finding the proper upper receiver is your best option. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. 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. 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. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. FN AR-15 5.56X45mm Nato . They . 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. can you buy feed ramps individually? Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. 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. What's the difference? 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. colt A1E1 733 uppers didn't have extended carbine feedramps ? Barrel, sight and trigger work on most pistols and shotguns. Theres a bit more to it than just polishing. Insert the barrel and sharpie the cut area, then use the right bit on a dremel. Some, me included, have said that the M4 ramps are a help to some of the larger-diameter cartridges in use, such as 6.5 Grendel or .22 Nosler. All Rights Reserved. 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 didnt think anything about it having M4 feed ramps. 30 cal. Anodized red parts. Barrel FAQs | Ballistic Advantage if you are OK with 3MOA, you might go 20,000 rounds! We want you, our readers, to be able to make informed decisions. Display as a link instead, 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? They are better! We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. Is getting it as part of the upper better? 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. 4. [ARCHIVED THREAD] - M4 feed ramp barrel in a non M4 ramp upper. Thanks for explaining the feed ramp topic in a couple of different ways. For a better experience, please enable JavaScript in your browser before proceeding. The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. I will check with compass lake. "C" stamp and CAGE code available. Here you can see an upper with "rifle" feedramps. 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. 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. This is a big tip, by the way, for pistol-caliber ARs. 2. I got my help from this thread, and thank you again to ORD. Don't forget read more information about it here! Should M4 feed ramps come with the barrel or upper? : r/ar15 - reddit 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. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. If a barrel comes with the feed ramps could I take them off? They were not intended to be super long range man killers. You can post now and register later. The first reason is that they are, indeed, better. By Will my A3 upper reciever work with my M4 barrel extention.According to some or your posts they will.Thanks Bill. Del-Ton, Inc. AR-15 16" M4 Custom Upper This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. 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. The extension is the part at the end of the barrel that fits inside the upper. 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. BrianEnos.com While I've got everything apart, I'm thinking I just want to put an M4 barrel extension on. EDIT: Okay, I understand now! All comments are held for moderation and will appear after approval. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. You are using an out of date browser. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. Just because you can, doesn't mean you should. Powered by Invision Community. Douglas 5.56 Stainless Steel Barrel 18" - 1~7 twist You must log in or register to reply here. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. They guide the bullet up and into the chamber. i have an extra brand new M4 barrel extension ramp to replace a rifle ramp. Whether they materialize or not depends on the direction of the mismatch. Which Model Colt 1911 is For Me? When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. Please allow 5~10 days for assembly and testing before ship date. In this episode of Gun Stock Reviews, we look at the difference between M4 Ramps and the old standard ramps of the past. Notify me of follow-up comments by email. This is one time it's better to go a little too far than to leave an edge for the . Some gun owners believe that the M4 ramps can help for some of the larger-diameter cartridges in use. No Feed Ramps on upper? - General Discussion - 308AR.com Community /r/ar15 is here for your favorite black gun links, build pics, questions and other tactical or practical information. How to Clone the M16A2 Rifle - The New Rifleman Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? 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. In military situations, it is advantageous for rifles to function with damaged, worn, or less than ideally serviceable magazines. Then the manufacturer discontinued the barrel. You need to match up barrels to receivers for optimum performance. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. 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). You cannot paste images directly. pictures would help. Reliability is the main concern for me when I re-barrel this rifle. 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.
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