Reflex sights were designed as CQB optics with limited distance capabilities. However, there are times a shooter must engage targets at greater distances—on quick notice.  The Mepro MX3-F is X3 power magnifiers that solve these two problems. They quickly and securely attach to the Picatinny rail immediately behind the reflex sight (such as Mepro M21, Mepro M5, and Mepro MOR) and will not interfere with the weapon’s operation. With the magnifier in the out-of-way, resting-position, the shooter has wide FOV for increased situational awareness. As long-distance targets appear, quickly flip it into position to engage without having to re-zero your rifle. The MX3-F has an integrated push-button mechanism that allows it to ride to the side when not needed. It can be configured for the right side or left side ride when not needed.