Holosun HS407COMP-RD-6 Open Pistol Red Dot Sight (6 MOA, RMR Footprint)
The Holosun HS407COMP-RD-6 is an open-emitter pistol red dot built around a large 1.1" x 0.87" viewing window and a single 6 MOA red dot reticle for fast tracking.
Features include Shake Awake, manual brightness controls with lockout and memory, and a side-loading CR1632 battery tray that allows battery changes without removing the optic.