Surefire Mini2 can. Navy armory build. DD 10.3" CHF barrel with CHF A2 FSP. VLTOR CASV-2 rail. VLTOR MUR upper. FN M4 select-fire lower. Tubb flat wire rifle-length spring in a carbine extension -> KAC SR-15 buffer -> LMT Aermet enhanced bolt and Gemtech adj bolt carrier set to suppressed...