However, I remember that RRA used to Dremel them in long ago to match M4 ramped barrel extensions Hopefully things have changed since M4 ramps have become the industry standard. I have an unanodized A2 upper with M4 feed ramps. 308 m5 using m4 feed ramps, which I belive are for the smaller round like. Yes, you could use an F front sight, although those were designed to used for the flat top AR's. They guide the bullet up and into the chamber. This upper is perfect for your retro builds! Share it in the comments section. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. With the increased use of larger-diameter cased cartridges, the M4 feed ramps are proving their values when using them in those cartridges. I've been wanting to build an A2 for a loooong time. 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. The American Firearms Guide to Shotgunning. One new winner* is announced every week! Copyright 2016 - 2023 by AdventureFootstep.com. You wrote that much to make a point that should have taken about 100 words? In general, all you need to understand is that the M4 feed ramps include the barrel extension and upper receiver. Check often for fit. They may as well be considered an endangered species. I too built a .458 SOCOM carbine . Review: Hi-Point JXP 10mm An Overgrown Yeet Canon Thats a Lot of Fun! I've modified barrel/receivers even before M4 cuts came out and done some receivers when the barrels had cuts. 's blog. I didnt think anything about it having M4 feed ramps. Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? 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. However Ive built numerous ar15 and lr308 rifles and pistols. Was quite a few companies adding them to A2 uppers for awhile, after the fact. I found the article very informative. A generated identifier is used for this purpose. A1 Stripped Upper Receiver w/M4 Feed Ramp. *Must have a registered ARFCOM account to win. If you have a regular A2 upper and buy a barrel from Windham, Erik can mount the barrel and cut the ramps. On the basis of this ID, http requests can be linked to each other and corresponding statistics can be generated on e.g. AR-15 Feed Ramp Problems - School of the American Rifle These longer, steeper feedramps were designed because of a problem discovered in the M4 during full-auto use (the 20 M16 never had this issue). Airport Terminal 2 to Airport Train Station - Munich Forum Should not be too hard. A2 Receiver with M4 Ramps. The rifle-platform M16s don't use them. Nick B., From all I can gather, non feedramp upper and barrel with feedramps will be a non issue. Modify AR15 A2 barrel extension for M4 feed ramp? This information helps us to understand how our visitors use our website. After a 2 week wait in shipping from Optics Planet I received my much awaited C7 style upper for an Operation Gothic Serpent build I was doing.
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a2 upper receiver with m4 feed ramps