NEW and Improved Ruger® Mini 14/Mini 30/ PC9/ PC4 GEN2 Receiver Picatinny Scope Rail Mount. Mounts onto Ruger® models that have the Ruger® Ring Mounts machined onto the top of the receiver. To include Mini 14, Mini 30, PC9, and PC4 rifles and carbines. Provides a Picatinny/ Mil-STD 1913 rail on the top of the receiver for mounting a Scope or Reflex optic. The GEN2 Rail has a see-through channel through the length of the rail and it allows the shooter to see and use the iron sights when the rail is mounted on the receiver. Mounts with four custom bolts, mounting tool included. Black Anodized Aluminum Construction. Length: 5.2".