Primary Weapons Systems BDE PUB-A Mount Fits HUB Suppressors Black 1.125-28 Thread Pitch. 125-28 threaded suppressors. Optimized for use on Pistol Caliber Carbines (PCCs) and firearms that do not require a suppressor booster the PUB A provides a secure tool-free mounting solution with repeatable concentric alignment. Built with the same precision as the rest of the PUB Mount family the PUB A ensures a rock-solid gas-sealed connection while maintaining ease of use. Simply thread your suppressor on and get to work no extra tools or boosters required. If you're running a pistol suppressor on a PCC or other fixed-barrel firearm the PUB A delivers the reliable hassle-free mounting solution you need. Specifications for Primary Weapons Systems BDE PUB-A Mount: Manufacturer: Primary Weapons Systems Fabric/Material: 17-4 PH Stainless Steel Color: Black Threads per Inch: 1.125x28 Features of Primary Weapons Systems BDE PUB-A Mount: ALPHA-Compatible: Works with all 1.125-28 threaded pistol suppressors Optimized for PCCs and Non-Booster Applications Rapid Tool-Free Mounting to PWS FRC Q LLC Cherry Bomb and Rearden muzzle devices Precision Tapered Interface for repeatable concentric alignment Torque Spec: 25-35 FT LBS Max Package Contents: Primary Weapons Systems BDE PUB-A Mount Primary Weapons Systems BDE PUB-A Suppressor Mount Fits HUB Compatible Suppressors