Material: Aluminum Anodized matte black finish, Length: 5.4 inches, Height: 0.36, Weight: 1.0 oz 2nd Generation mount Made from aluminum, Built to withstand heavy recoil, 7/8 inch wide weaver style rail, will accept most scope rings Center see-through channel allows the use of most of the iron sights. This mount will fit Marlin rifles with a flat top receiver that have been drilled and tapped at the factory for a scope mount. Note some older model Marlin rifles may Not have been drilled or tapped at the factory for a scope mount. Includes allen head screws that will fasten directly on to your rifle. Fits the following Marlin rifles 992M, 989, .22, 9, 45, 30AS, 30AW, 36, 62, 93, 336, 336C, 375, 444, 1993, 1894 Cowboy, 1895, Mossberg 640, Western Field 740, Glenfield 30, Zane Grey, Camp-9 Carbine. With this mount you can attach most scopes, red dots and reflex sights to your Marlin rifle. Brand New w/ Full Manufacture Warranty