The HE508T-RD Micro Red Dot System from Holosun is a pistol-sized optic with an open frame for a great sight picture, clear glass and a indestructible CNC machined Titanium housing. It is powered by a CR2032 battery and Holosuns innovative Solar Fail-safe back up. The HE508T will run up to 10 years on a single battery on setting 6, dot only.
