Vector Optics FAL Rail Description: Vector Optics FAL DSA 58 Picatinny Scope Mount (Black), It fits on all weaver standard rings. Product Features: Top military picatinny rails Rail length: 218mm (8.6 inch) Weight (net): 240g (8.5 ounce) Replaces dust cover with large ejection port for optimum performance Lower rail style with CNC made One piece style in precision Superior style, easy to use: sliding rail for quick and installation High quality aluminum alloy in durable black matte finish Shock proof can be used on real fire caliber