Optimize your suppressed shooting experience with the Wolfpack Armory Ventilator Plan B HUB Adapter 1.375x24 in Black Nitride. Key Features Patent-Pending Gas Venting: Directs gases forward at the blast chamber to lower over-gassing, reduce carbon buildup, and improve shooter comfort on gas-operated firearms. Plan B / Rearden Compatibility: Seamlessly adapts tapered Plan B-style muzzle devices to 1.375x24 HUB-threaded suppressors such as the SilencerCo BRAVO series. Durable Construction: Precision-machined from 17-4 stainless steel, heat-treated to H900, and finished in corrosion-resistant black nitride for long-term reliability. Low-Profile Design: Maintains a compact setup with minimal added length and an outer ring diameter of 1.62 inches. Easy Installation: Features 1-inch wrench flats for secure mounting without obstructing your sight picture. Specifications Threads: 1.375x24 (HUB) Material: 17-4 Stainless Steel Finish: Black Nitride Weight: 2.1 oz Outer Ring Diameter: 1.62 in Compatibility: Plan B and Rearden-type muzzle devices; HUB-threaded suppressors