Advanced Armament Company introduces the new 300 SD, a purpose-built suppressor designed to make 300 Blackout subsonic extremely quiet while still being rated for supersonic 300 BLK and limited .308 use. Built from 3D-printed titanium with a black DLC finish, the 300 SD is lightweight, durable, and fully modular with long and short configurations. In long form it measures 8 inches and weighs just over 12 oz; in short configuration it’s 5.43 inches and only 5 oz. Designed for low weight, excellent suppression, and practical durability, the 300 SD launches in January as a dedicated solution for quiet 300 BLK builds.