Sig Sauer P211 Barrel Block Assembly Features The Sig Sauer Barrel Block Assembly for the P211 includes everything needed to maintain or rebuild the pistol s compensator system from the barrel block itself to the compensator retention spring and wedge pin. Because it is a genuine factory assembly every component is built to the exact tolerances the P211 platform requires for proper function and reliability. The included set screw secures the assembly firmly in place preventing the parts from loosening under the recoil generated by the compensator system. A 13 pound recoil spring is included as part of the assembly giving owners a correctly matched spring rate for consistent cycling. This assembly allows a P211 owner to configure their pistol for use in even more popular competitive shooting divisions expanding the platform s versatility beyond its factory configuration. Because every part is sourced directly from Sig Sauer fitment and function match what the P211 was originally designed around avoiding the compatibility issues that can come with aftermarket alternatives. The black finish matches the factory look of the P211 line for a seamless appearance after installation. For competitive shooters and P211 owners who need a genuine replacement or reconfiguration part for their pistol s compensator system this Sig Sauer Barrel Block Assembly is the correct factory solution. Sig Sauer P211 Barrel Block Assembly Specifications Manufacturer: Sig Sauer Model: Barrel Block Assembly for Sig P211 Caliber: 9mm Color: Black Compatible Hosts: Sig Sauer P211 Available At: GrabAGun