Ultimate Arms Gear Marlin Rifle Deluxe Scope Mount + 4x30 Rangefinder Range Finder Scope + Scope Rings + Lens Covers + Lens Cleaning Kit Ultimate Arms Gear Marlin Rail Aircraft Grade Aluminum Alloy Mount with a Black Anodized Finish. Length: 4.73" . Complete with Screws & Allen Key for Mounting. Made to fit : Marlin 9, 45, 30AS, 30AW,36, 62, 93, 336, 336C, 375 & 444, 1993, 1894, 1895 Cowboy , Glenfield 30, Zane Grey & Camp-9 Carbine Marlin 922M & 989, Mossberg 640,Western Field 740. Easy to Install, Will Line Up with the Holes on your Rifle - If You Do Not Have the Predrilled Holes You Will Need to Get Your Rifle Tapped. Provides A Industry Standard 7/8" Weaver / Picatinny Tactical Rail for Attaching Accessories Such As Scopes, Sights, Optics, Flashlights, Scope Rings Etc. Black Anodized Aircraft Grade Aluminum. Accepts All Standard Weaver / Picatinny 1913 Accessories. Bolts Directly to Pre-Drilled and Tapped Flat Top Receiver. 4x30 Rangefinder Sniper Scope: Magnification- 4X Fixed. Crystal Clear 30mm Lens . Tube Diameter- 1". Military Quality Rangefinder Reticle Allows the Shooter to Estimate. Range of Target. Fully Coated to Withstand Heavy Duty High Recoil Rating. Full Windage and Elevation Adjustments. Nitrogen Filled, Shockproof, Fogproof, and Water Resistant. Thumbnut QR Rings, Lens Covers and Lens Cleaning Kit Are Included.