110 SASS Actual tries the Trijicon RCR to find out if it is the best red dot sight for pistols in the market. According to Trijicon, the the RCR is a next-generation red dot sight that is built for the toughest conditions. It is as durable as the legendary ACOG, and it can withstand direct impacts and harsh environments. The RCR is also accurate and precise, and it works with any style or caliber of firearm. The RCR uses the same mounting pattern as the RMR, so it does not require any additional plates or adapters.