Aluminum Picatinny Rail Sections... these rails are direct replacements for the rails used on our CASV series of handguards. Machined from aluminum stock and anodized to military specifications, these rail sections are pre-drilled for mounting and battle tested tough. Mounting screws are included with each rail.

Exact sizes are:

2" Rail - 2.16 inches long

4" Rail - 3.75 inches long

5" Rail - 5.31 inches long