Black Rain Ordnance 556 SOCOM Complete Upper 556 NATO 16″ SOCOM Profile Chromoly NATO Barrel Black Finish 1:7 Twist BRO 12″ M-Lok Hybrid Handguard Mid Length Gas System “LET IT RAIN” Laser Engraved Dust Cover SPEC15 Nitride Coated Bolt And Carrier Group Mil-Spec A2 Flash Hider Spec 15 Charging Handle BLEM (Minor Scratches on Barrel and Charging Handle) BRO-SPEC15-CU-SOCOM-556