Quick view Advanced Armament Advanced Armament Company Ti-rant Piston Conversion, Aac 65002 Piston Ti-rant 9m Hd/ti-rant 45 M13.5 $74.99 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... Compare Add to Cart