Sep 7, 2008 · Quoted: Can anyone report how a Colt M4 is marked vs. a Colt M4A1 in US service? For example, on the fire selector, I do know the M4A1 is marked "SAFE-SEMI-AUTO" but is the M4 …

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Aug 30, 2012 · The M4 barrel extension is the physical part on the barrel as in the photo above. M4 feed ramps generally refers to the matching feed ramps cut into the upper receiver. More correctly, M4 …

Jul 27, 2025 · FYI, a M4 extension will work just fine in a receiver not cut for the extension. The only problem is when you run an extension with out M4 ramps in a receiver with M4 ramps cut into it. This …

Jan 3, 2021 · I just noticed ( guess I’m behind the times lately) a few Turkish Benelli M4 clones on the market and was curious if anyone has compared them to see which one is the better of the offerings. …

May 1, 2008 · When zeroing the M4 at 25m, set the BDC to 6/3 +2. Make all your elevation changes on the front sight so the BDC will work. Center your group in the lower half of the center bullseye. At …

Feb 16, 2007 · An M4 cannot be "battle sighted". The distance clicks on a carry handle are calibrated for a 20" rifle. You want a good sight for about to 300 yds, then I would sight in dead on at 50 yds.

Feb 6, 2008 · The M4 Carbine is M4 and M4A1. The advantages to the M4 vs. M16 is that its shorter and adjustable so it fits a wider variety of soldiers, is easier to shoot with, and is better for urban …

Feb 22, 2025 · For those wondering about the Panzer Arms M4 Full Length 7 Round Magazine Tube and it's compatibility with the MAC 1014's, here is my experience.Purchased two tubes from …

Jan 5, 2022 · USSOCOM released a series of improvements to the M4 upper + CQBR/Mod1 programs. The SOPMOD blocks reference the included handguards, optics, lasers, etc which accompanied …