Introducing the YHM sRx Muzzle Brake! - YHM's new line of sRx products were designed with aesthetics and ease-of-use as the top priorities and that is no different for the YHM sRx Muzzle Brake (YHM-4405-MB's). This Q.D. Muzzle Brake comes in two variations (1/2 x 28 & 5/8 x 24) and it's compatible Q.D. Adapter/Mounting Interface attaches to the industry standard (HUB) 1-3/8 x 24 threads. It features an internal taper seal-in front of the threads-that locks your suppressor on and forms a tight seal to contain gasses while in-use. This means no gasses or debris can build up on the threads. - The sRx Muzzle Brake must be paired with The YHM sRx Adapter (YHM-4400) . - The sRx Muzzle Brake adds minimal length and weight to the suppressor set up while also allowing you to reap all the benefits of the new YHM sRx System-when used in conjunction with The sRx Adapter. The full YHM sRx (Suppressor Rx) System will be the obvious choice for someone looking for a sleek low-profile suppressor set up-that