The AAC Piston enhances the versatility of your AAC Silencer, allowing you to easily swap the suppressor between various host firearms with different barrel threads. Converting the silencer for compatibility with a different barrel thread pitch is straightforward simply select the appropriate piston and replace the existing one at the rear of the sound suppressor. Each AAC piston is constructed from heat-treated stainless steel, featuring a durable bead-blasted matte finish for both resilience and aesthetic appeal. The engraved markings clearly indicate the thread diameter, thread pitch and direction of rotation, ensuring effortless installation. With the AAC Piston, you can optimize your silencer's performance across a range of firearms, making it a versatile addition to your shooting arsenal.