This Ncstar Vism aftermarket Ruger® PC Carbine™ RMR® Footprint and Rear Sight Mount-Micro dot base mount Fits Newer Ruger PC9, PC40 (Takedown Carbines Only!) mount replaces the factory rear sight base and allows the mounting of NcSTAR® and other RMR® base type optics as low as possible to the Ruger® PC Carbine® takedown barrel. Base mount replaces the factory rear sight base and allows the mounting of NcSTAR® and other RMR micro dot optics as low as possible to the barrel. Allowing the micro dot to co-witnessing with the iron sights. This Micro dot base is compatible with NcSTAR® FlipDot optic series, SPD Solar Micro dot, and any other optics with an RMR® footprint base. This micro dot base mounts bolts directly to the barrel rear sight base and the factory windage and elevation iron rear sight bolts onto the rear of the mount. Overall length: 3.1".
Note: Fits Most Newer Ruger PC9, PC40 (Takedown PC Carbines Only!) (Will Not Fit Older Police PC9/PC40 Models.