Ruger Police Carbine PC9, PC4 Scope Mount Rail perfect for adding accessories to your rifle. Scope Mount also fits Ruger Mini 14, Ruger Mini 30, PC9, PC4 Gen 2 Receiver Picatinny Scope Rail Mount rifles and carbine that have the Ruger style scope base mount machined onto the top of the receiver. Provides a Weaver Style 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. Scope Mounts with four custom bolts, mounting tool included. Black Anodized Aluminum Construction. Length: 5.2" long. Ncstar Limited Lifetime Warranty.