The Evolution accessory rails are a standard Mil-STD-1913 Picatinny rail used for mounting accessories such as bipods to the handguard of the Evolution chassis system. They are made from 6061 T-6 aluminum and come in a matte black anodized finish and are available in 11" and 5.5" lengths.
**WEIGHT: 1.5 ounces. (5.5 inch) *WEIGHT: 2.9 ounces. (11 inch)