TAPCO Self Timing Brake - Elevate your shooting experience with the TAPCO Self-Timing Brake to help maximize control and minimize recoil. Made with heat-treated 4140 steel for strength and durability. With a thread pitch of 5/8 x 24, this brake seamlessly integrates into a variety of rifles. 30 Caliber Made from heat-treated 4140 steel Black nitride finish 3 side ports for maximum recoil mitigation