Used Holosun 509T RMR Adapter Plate (no screws)

Holosun 509 Adapter Plate for RMR / 507C Footprints

ADAPTER PLATE FOR RMR 407C 507C 508T OPTIC FOR GLOCK® MOS 17 19 19X 45 40 41 47

Adapter Plate for GLOCK® MOS and Holosun® 407/507C/508T Trijicon® RMR/SRO

Holosun Technologies 509 Adapter Plate Fits HS507C Footprint - 509PLT-507C

Adapter Plate for Glock 17/19 MOS Fits Holosun 407/507C/508T & Trijicon RMR/SRO

TSA® Optic Adapter GLOCK® Standard MOS to RMR/ Holosun® 407C/507C/508C/508T

Red Dot Adapter Plate for CZ Shadow 2 OR, Holosun 407c/507c, Trijicon RMR/SRO