Official Products of Ultimate Arms Gear, Brand New. Ultimate Arms Gear Tactical FN FAL / LAR / L1-A1 Rifle Deluxe Weaver Picatinny Rail Scope Sight Dust Cover Replacement Mount. Heavy Duty, One-Piece Dust Cover Replacement with Integral Picatinny Rail Provides A Rock-Solid Platform and Optimum Mounting Flexibility for Scopes, Tactical Sights, or Any of Your Favorite Weaver-Picatinny Based Components. This is Designed to be Both Inch and Metric Pattern Compatible, and It Features A Larger Ejection Port for Optimum Performance. This will provide a True MIL-STD 1913 Rail Accepts Both Picatinny and Weaver-Style Mounting Accessories that is Over 8˝" Long to Provide Plenty of Mounting Space, Even for Long Body Scopes. The Base Rail is Low Profile to Allow the Use of Iron Sights. Rigid, Precision Machined Aluminum Body with Riveted, Internal Steel Frame Rails for Extra Support - Net Weight 8.2oz .The Sliding Rail System Allows for Quick and Easy Installation without the Use of Locking Plates. Hardcoat Anodized for Durability.