SNIPER45 Degree Offset Side Rail for Mounting Laser or Mini Red Dot or Flashlight 45 degree offset canted Picatinny rail Secure fit to any Picatinny rail 1.77 inches long (4 slots) Premium 6061-T6 aluminum alloy, hard-coat anodized Buy 2 and make normal backup sights canted .77 x 1.69 x 0.43 inches (L x W x H), 1.2 ounces