I have a black (teflon) troy/vtac alpha rail (13 inches) that came mounted to the upper I purchased but would rather have a different style rail. Obviously it has been mounted, but it has not been shot. It is in like new condition and has just been sitting on the rifle. Comes with all three rail sections, one with a QD slot. Here is the product page: Troy/VTAC BattleRail Alpha - 13" Asking $160, ftf seattle area.