Footprint adapter | from Trijicon RMR to Holosun 509T Beretta PX4 Shell holder with flared loading

Shell holder with flared loading port holds the last shell securely and funnels rounds for faster

and reduces hot spots over long sessions

keeping the rifle balanced without adding mass where it slows target transitions

Adjustable height and angle positions the cheek consistently for a repeatable sight picture across different shooting positions

giving a consistent cheek weld and sight picture

Footprint adapter | from Trijicon RMR to Holosun 509T Beretta PX4 Shell holder with flared loadingFootprint adapter that converts a Trijicon RMR pattern to the Holosun 509T footprint. It mounts on top of an existing Trijicon RMR plate or mount, letting you fit any red dot sight built to the Holosun 509T footprint. Mounting hardware is included. Holosun 509T footprint converts the mount below to accept any optic built to this footprint Hardware included screws and installation hardware supplied in the box CNC machined aluminium rigid, zero play