2010年2月12日 · Finding the proper upper receiver is your best option. You CAN modify a rifle/A2 barrel extension to an M4 style extension, but it isn't always the best way to go unless you just …

2011年4月26日 · Any reason I can't match the upper to the barrel? No reason why you 'can't', other than it's just a PITA compared to buying an upper with the ramps already cut *and …

2012年5月16日 · I have a S&W M&P-15. The barrel extension has M4 feed ramps but the receiver does not. I know this is better than the other way around, but I'm wondering what the …

2021年4月20日 · 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 …

2019年5月7日 · What are M4 Feed Ramps? Regular feed ramps are cuts into the barrel extension only, which allows guiding the round into the chamber during loading, making them a …

2023年7月29日 · M4 ramps extend into the upper receiver itself. Yes. The barrel extension cuts and the cuts in the aluminum receiver blend together. A quick google image search for “M4 …

2012年1月14日 · If you are referring to M4 feed ramp cuts, They are a improved design in the feed ramps that more reliably help the round transition from the staggered magazine into the …

2023年8月26日 · Anyone interested in the MEGA MML offerings, be aware of the M4 cuts on the upper. They may be far outside of specification. The cuts on this particular MML upper are …

2011年12月20日 · Is it necessary or very strong suggested with the larger 30 cal bullet to have the m4 cuts for reliable feeding? I really don't want to have to "add" them with a dremel.

2024年9月27日 · Selecting the perfect M4 style upper receiver can be confusing, especially when it comes down to all the assorted flavors that are floating around out there. However, we have …