This DUAL-LOK Mount interfaces with all DUAL-LOK series silencers. (DUAL-LOK 5 DUAL-LOK 7 HRT-556 and HRT-762) - Constructed of 17-4 PH stainless steel the DUAL-LOK EZ-Brake features 3 radial slots which provide effective recoil mitigation. The DUAL-LOK EZ-brake weighs 2.5 ounces making it one of the lightest mounts available for the DUAL-LOK Interface. The lighter weight reduces suppressor system weight while making the host firearm barrel lighter and more responsive to the shooter. The EZ-Brake does not require timing and will interface with a 13/16 standard socket wrench for installation. - Diameter: 1.075 [splines] .93 [unit] - OAL: 1.4 - Weight: 2.5 ounces - Materials: 17-4PH Stainless Steel - Finish: Black Nitride - Radial slots provide recoil mitigation with no timing required - Taper and DUAL-LOK retention ring ensures solid lock up and minimal/repeatable POI shift - 17-4 PH Stainless steel - Lustrous Black Nitride Finish