ABOUT RUGER PC CARBINE 9MM 16.12″ BARREL

I second what WingedMelon stated. I've quite a few Holosun optics, including this one particular, and have not experienced a problem with any of them. I am basically selling my Trijicon RMR to acquire One more a single. The 507 is on par, if not improved, than my DPP.They are also designed for easy insertion and removal all through reloads, general