Barska Barrel Mount Rail. These Barska mounts will attach to almost any rifle barrel. Secured by four screws the mount won't rattle or come loose when you fire your weapon a must for precision optics like laser sights rifle scopes and red dot sights. The Barska Aluminum Barrel Mounting Rail is a single rail system with four rail slots enough space to attach a weapon accessory in the optimum position. Barska has designed the rail to be a little more than an inch and a half long and its black matte finish won't reflect sunlight. Easily attach accessories to your rifle with the Barska Picatinny Barrel Mount Rail. Specifications for Barska Barrel Mount 4-Slot Accessory Rail: Rail Type: Picatinny / Weaver Rail Length: 1.57" Material: Aluminum Finish: Black Matte Rail Slots: 4 Features of Barska Black Matte Barrel Mount: Durable barrel mount by Barska Clamps to the barrel of your firearm with four screws Single 4-slot Picatinny-style rail Black matte finish Sturdy aluminum construction Only 1.57 inches long Backed by the Barska one-year limited warranty Package Contents: Barska Barrel Mount Rail AW11712 Barska AW11712: Barrel Mount Rail