Compact, single-ring mount for Aimpoint CompML, CompML2, CompML3, or similar red dot sight requiring a single 30mm ring. The top half of the ring is machined steel for superior strength and secured by four hex-head screws (wrench included) to ensure full contact with the sight body. Spacer raises the Aimpoint Comp Mount 1/2" for co-witness with iron sights when mounting directly to flattop receivers. Can also be used on #22TX30 Trijicon Tri-Power Mount. Mfg: A.R.M.S.,Inc SPECS: Mount -Hardcoat anodized aluminum and Parkerized steel, matte black. 2-5/16" (5.6 cm) long. 3.9 oz. (109 g) wt. Spacer Aluminum, hardcoat anodized, matte black. 2.3" (58mm) long, .54"(13 mm) high. 1 oz. (28g) wt. Mounting screws included.