Enhance versatility with the DEAD AIR HUB TO P-SERIES ADAPTER, your solution for compatibility between HUB-equipped silencers and P-Series adapters. This adapter, also included with the Primal, caters to both rifle and pistol calibers, ensuring seamless functionality. Overall Length: 0.545"; Weight: 0.88 Oz Material: 4140 HT Alloy Steel Finish: QPQ Black Nitride Upgrade your suppression system today for a performance boost.