Introducing the HS503CU, a cutting-edge micro red dot optic featuring a versatile 65 MOA circle dot reticle with the option to switch to a precise 2MOA dot. Holosun's innovative solar technology ensures reliable operation without a battery in various lighting conditions, while the backup battery provides an extended lifespan of up to 5 years for the dot and up to 2 years for the circle dot. The "U" designation signifies a housing design that conceals the windage and elevation turrets on two sides.

• Parallax-free with unlimited eye relief
• New advanced technology LED allows up to 50000 hr of operation on (1) CR2032 battery
• Unlimited field of view
• Powered by both battery and solar
• 10 daylight and 2 NV compatible brightness
• Up to 50000 hr Battery life