The original Griffin Armament HRT-556, the shortest addition to the DUAL-LOK family of suppressors, was designed for elite hostage rescue teams operating in demanding and often close-quarter environments where everything is on the table, size, maximum sound reduction, reduced flash signature, and rugged durability. The HRT-556 patent pending DUAL-LOK system also addressed the need for a robust and reliable wear-free quick detach mounting solution with maximum strength while maintaining a minimum point of impact shift.