WHAT DOES SAGE TS870R MEAN?

Just acquired my MCK for any G19 developed from a poly80 kit using a customized Rock fluted slide and threaded barrel. When purchasing I was involved whether the extra half inch of your threaded barrel would in good shape if the barrel shroud was prolonged to G17 size.Mounting a pink dot, a lightweight along with a laser turns my P-10C into a handl