LMT AT Quick Thread Base is designed to be compatible with many suppressors in the industry that utilize the standardized 1.375 x 24 mounting system. The base features an 1-1/8 wrench flat for easy installation with the LMT AT tool or a standard open-end wrench. The Quick Thread Base is ready to accept muzzle devices like the RFH1228556, RFH5824762 (LMT AT flash hiders) or any Xeno style muzzle devices.