C&H Precision V4 MIL/LEO Adapter Base Plate converts Glock MOS pistol platforms (models 17, 19, 20, 21, 22, 23, 34, 35, 40, 41, 45, and 47) to accept Trijicon RMR/SRO and Holosun 407C/507C/508T/507Comp footprint red dot optics. Machined from lightweight aluminum with a hard black anodized finish, this red dot optic mount delivers a low-profile interface for secure optic integration. Includes optic plate and mounting hardware. Safety Note Always ensure the firearm is unloaded before installing or adjusting any optics or bases. Verify proper torque specifications during installation. Improper mounting may affect accuracy and safety.