The Precision Armament ACCUWASHER AW500 GEN2 SHIM KIT is a stainless steel, 1/2-28 threaded solution designed to optimize muzzle device alignment for rifles, delivering precise shimming with the renowned GEN 2 ACCUWASHER system. Engineered to integrate seamlessly with rifle muzzle devices, this shim kit supports accurate timing and concentricity, helping shooters achieve optimal barrel harmonics and reliable zero retention when mounting compensators, brakes, or flash suppressors. Built from durable stainless steel, the AW500 GEN2 shim kit resists wear and corrosion while maintaining consistent compatibility across a range of Precision Armament muzzle designs, enabling straightforward installation and repeatable results. Whether refining a precision build, restoring proper alignment after a device swap, or tuning for improved muzzle performance in field conditions, this shim kit provides a practical, repeatable method to lock in alignment without roadside guesswork. The combination of robust material, precise machining, and the GEN 2 ACCUWASHER philosophy offers a dependable path to maintaining true bore alignment, reducing assembly variance, and supporting consistent shootability across varied loads and environments.