Maxim Defense Industries SDX-508, Semi-automatic Rifle, SBR, 300 Blackout, 8.5 Threaded Barrel, Cerakote Finish, Arid (Flat Dark Earth), 30 Rounds, 1 Magazine, Includes DSX-D Suppressor MXM-49822 Duty built for the world's most rigorous demands, this suppressor system is designed to be the most robust suppressor in its category. Primary design features include the significant reduction of sound signature, reduction of recoil, and increased accuracy. It has been repeatedly tested with SOCOM tables across various calibers and has survived with no damage or significant change in sound reduction.