Each plate is precision machined to the tightest tolerances on HAAS CNC machines and each plate goes through multiple quality checks before shipping to our customers. Specifications for C&H Precision Weapons V4 MIL/LEO Adapter Holosun 509T Mount: Manufacturer: C&H Precision Weapons Red Dot Sights-Footprint: Holosun 509T Optic Cut: Holosun HE509T Fabric/Material: Stainless Steel Color: Black Gun Model: Glock 40, Glock 35, Glock 22, Glock 21, Glock 17, Glock 23, Glock 20, Glock 19, Glock 34, Glock 45, Glock 41 MOS, Glock 40 MOS, Glock 41, Glock 19 MOS, Glock 35 MOS, Glock 17 MOS, Glock 34 MOS, Glock 47, Glock 45 MOS, Glock 47 MOS Finish: Electro Polish Length: 2.5 in Width: 1 in Gun Type: Pistol Gun Make: Glock Weight: 0.5 oz Package Contents: C&H Precision Weapons V4 MIL/LEO Adapter Holosun 509T Mount 1x Optic Plate 2x M3 Plate Mounting Screws What firearm models does the manufacturer say C&H Precision Weapons V4 MIL/LEO Adapter Holosun 509T Mount is compatible with? The manufacturer suggests that C&H Precision Weapons V4 MIL/LEO Adapter Holosun 509T Mount is compatible with Glock 41, Glock 45 MOS, Glock 47 MOS, Glock 41 MOS, Glock 40 MOS, Glock 35 MOS, Glock 19 MOS, Glock 34 MOS, Glock 17 MOS, Glock 47, Glock 19, Glock 40, Glock 45, Glock 35, Glock 34, Glock 22, Glock 17, Glock 21, Glock 23, Glock 20