Colt 6920 FS/FT. The gun is an OEM2 so low profile gas block is factory. Fortis rail, Noveske charging handle, Emtan Carmiel back up sights. The rifle has less than 100 rounds through it. Asking 1300 or will consider trades for an MK12, ps90, Beretta arx100, cz handguns. May consider other offers. Thanks - 4zero9-20one-9nine0seven