AAC Ti-Rant 45 Fixed Mount 300BLK

The AAC Ti-RANT 45 Fixed Mount Adapter, 5/8×24 (300BLK Subsonic Only) is the factory original steel adapter featuring a 5/8″x24 TPI and is for use with Subsonic .300 Blackout ammunition only. This Ti-RANT 45 component features a wave spring to provide tension to the rear cap while assembled, which then prevents unintended loosening during use. Conventional stand-alone fixed barrel spacer is not needed, as this part effectively combines the 5/8″ x 24 TPI piston and fixed barrel spacer into one part.