It is recommended to use the stock HK TRS (Trigger Return Spring) for best drop-in reliability
RUGER 40185 - SHIELD OPTIC BASE
MARK IV™ 22/45™ TACTICAL Silencer Shop Exclusive: 40179
For More information about compatibility with SSH models check out our blog post here
Please select the optic to be mounted in the drop down menu to provide the correct hardware kit
Low Profile Red-Dot Mount, Ruger Mark Series (RMR, Holosun) Silencer Shop Host (SSH) It is recommended to usePistol Compatibility Notice: Some new models of Ruger MKIV uppers have a new mounting pattern on the receiver which is not compatible with this product. The following models are NOT compatible with this mount: MARK IV 22 45 TACTICAL Silencer Shop Exclusive: 40179, 40182, 40181, 40186 MARK IV 22 45 LITE Optics Ready: 43946, 43947, 43948, 43949, 43960 Our low profile mount for Ruger MARK series pistols allows the end user to mount a Red Dot Optic