Primary Arms Optics talk about TCRM or ROK in this LPVO + Reflex Mounts Comparison video... "Ever wondered whether a 12 o’clock or 1 o’clock reflex mount is better for your setup? 🔧 Check out our latest YouTube video where we compare the TCRM and ROK mounting solutions! From speed to ergonomics, we break down the pros and cons of each to help you make the best choice for your LPVO + red dot combo."