Enhance your shooting precision with the NcSTAR VMRUPCC1913 Ruger PC Carbine Barrel Picatinny Mount. This innovative accessory replaces the factory rear sight base, enabling direct optics attachment to your firearm's barrel. Crafted for convenience and stability, the mount integrates seamlessly with the factory windage and elevation rear sight, ensuring that you maintain essential targeting features while expanding your mounting options. This compact 5.0" overall unit offers incredible versatility. This 3.6" long Picatinny/MIL-STD 1913 rail mount replaces the factory rear sight base and allows the mounting of optics directly to PC Carbine(R) barrel. This rail mount bolts directly to the barrel rear sight base and the factory windage and elevation iron rear sight bolts onto the rear of the mount. Picatinny rail has 8 slots for flexible mounting of Picatinny/weaver type scope rings. Picatinny rail is 3.7" long. Overall length: 5.0". Upgrade your Ruger PC Carbine with this essential accessory for enhanced shooting accuracy.