The 16" GII AP4 is everything you would expect from an improvement to the award winning LRAP4, which was the second MSR to win an NRA Golden Bullseye Award. It has a lightweight 16" barrel, Teflong-coated aluminum receiver, 6-position collaspsible stock, DPMS carbine length Glacier Guard, F marked front sight base, and MagPul BUIS rear sight.