Our proprietary Mach3D Compensator (standard on GTO models) uses advanced additive manufacturing to port gases with unrivaled efficiency. This technology creates a "neutral" return to zero, making the P211 the flattest-shooting double-stack system SIG SAUER has ever produced.

Compatible with the 4.4" bullnose barrel on the P211-GTO models. Looking to replace your barrel as well? Find the factory replacement barrel here.

Includes:

(1) MACH3D Compensator

(1) Compensator wedge pin

(1) Compensator retention spring