The Advanced Armament Co. AAC Piston is available now from LM Ironwerks, a licensed FFL/SOT dealer in Louisville, Kentucky.
This AAC Piston enhances the versatility of an AAC Silencer by allowing the suppressor to be swapped between various host firearms with different barrel threads. All that is necessary to convert the silencer to be compatible with a different barrel thread pitch is to select the proper piston and replace the existing one residing in the rear of the sound suppressor. All AAC pistons are constructed of heat-treated stainless steel with a bead blasted matte finish, and each is engraved to indicate the thread diameter, thread pitch and direction of rotation for installation.
It ships directly to the address you enter at checkout, so no dealer transfer is needed. In addition, our team reviews every order before it ships. Have a question about fit or compatibility? Contact us before you order and we’ll help. Looking for something different? Browse all of our suppressor parts.
SKU: AAC-PISTON
