The Yankee Hill Machine 4405MB24 is a sRx muzzle brake designed for use with Yankee Hill's sRx system and adapters. It attaches to HUB style interfaces via a 5/8-24 thread and features an internal taper seal to lock onto a suppressor and form a gas-tight seal. It is designed to pair with the sRx Adapter and provides a low-profile, durable brake solution for AR-pattern platforms.