LMT AT Direct Thread Base brings even more modularity to your ION suppressor. Designed around the industry standardized 1.375" x 24 “HUB” mounting system, the direct thread base makes for an extremely compact profile for users that prefer to run a dedicated suppressed weapon. The Direct Thread Base is ready to accept 1/2×28 barrel pitches and utilizing a 1" outside wrench flat, and an internal 3/4" wrench surface, the user has multiple options for affixing the can and base to the weapon system in restrictive environments. Also available in 5/8 x 24!