Xeno Pistol Wee Brake - Compact QD Muzzle Brake for Pistol-Caliber Subguns The Xeno Pistol Wee Brake brings a compact, QD-ready muzzle device tuned for pistol-caliber subguns and suppressed pistol platforms. Built with a 9 mm bore across all thread options and machined from nitrided 4140 steel for hardness and corrosion resistance, the Wee Brake resists thread galling and simplifies carbon and copper cleanup compared with uncoated stainless parts. Shortened length and low weight keep overall stack minimal while the large taper and robust construction deliver repeatable, durable lockup when used with Xeno adapters. Designed as a quickattach mounting option, the Wee Brake pairs with Xeno adapters to work on a wide range of HUB and KeyMo hosts and was engineered with smaller blastchamber suppressors in mind to preserve suppressor durability and performance. Accessible tool flats, lefthand thread options where specified, and optimized porting support precise shooting with minimal added length or mass, making the Xeno a practical choice for shooters who demand reliability, repeatability, and a futureproof mounting interface. Compatible hosts include Nomad series with Xeno adapter, Nomad Ti series with Xeno adapter, Primal with Xeno adapter, Wolfman with Xeno PSeries adapter, Sierra 5, and Wolverine with HUB adapter. Verify adapter selection and visually confirm baffle alignment after installation before firing.