Daniel Defense Daniel Defense, DDM4 300 S, Complete Upper, 300 Blackout, 10.3" Cold Hammer Forged Barrel, 1:8 Twist, Black Finish, Includes Flash Suppressor, Grip-N-Rip Charging Handle 23-088-19020-047
Daniel Defense Complete Upper Receiver, MK18 URG, 556NATO, 10.3" Hammer Forged Barrel, 1:7 Twist, Flat Top Receiver, Flat Dark Earth Finish 23-004-08013-011
Daniel Defense Complete Upper, MK18 URG, 556NATO, 10.3" Hammer Forged Barrel , 1:7 Twist, Flat Top, Black Finish 23-004-08013-006