10.3″ COLT MK18 LARUE FF RAS

-Colt M4 upper no cage code

-Colt 10.3″ 556 1/7 barrel (.070 gas port) new surplus Crane Spec barrel (cut down)

-Larue 9″ FF RAS Quad Rail

-Lo profile gas block, barrel dimpled to barrel (gas block is similar to MK12 but slimmer to fit under handguard)

-PRI Gas tube

ALL NFA RULES APPLY