New in box No BCG OR CH
Colt M16A4 Upper Assembly, 20" 1/7 twist chrome lined barrel, 5.56X45 NATO.
Colt Part #: SP401547 RO901
flat top upper receiver with A2 profile 20 inch barrel.
Colt CAGE code with Square forge marking. Barrel is marked C MP 5.56 NATO 1/7.
Colt M16A4 Upper Assembly, 20" 1/7 twist chrome lined barrel, 5.56X45 NATO.
Colt Part #: SP401547 RO901
flat top upper receiver with A2 profile 20 inch barrel.
Colt CAGE code with Square forge marking. Barrel is marked C MP 5.56 NATO 1/7.