ajsompShaw Barrels 6mm ARC complete upper receiver group. The upper is brand new. Specs are: 16” 416R stainless steel non-fluted barrel 1:7.5 twist Midlength gas system with stainless gas tube Superlative arms adjustable gas block 12” handguard (box says 11” but it’s a 12” handguard”) Cryptic bolt carrier group Radian raptor charging handle
