JARD Ported Brake is a muzzle device designed to disperse exiting gas radially, reducing backward force and felt recoil. Available for a wide variety of calibers with 5/8x24 threads and a 0.675 inch outer diameter. Length 1.87 in. Material 4140 steel alloy. Finish Black. Package contents: JARD Ported Brake. Variants include calibers such as .223 Remington, .308 Winchester, 6.5 Creedmoor, .204 Ruger, .25 Remington, 9mm Luger, .338 Lapua Magnum, 7mm Remington Magnum, etc.