The XTS-135 Xtreme Tactical SpeedDot is waterproof, fogproof, and shockproof, and the sight’s high definition 5 MOA red dot has 11 brightness settings to adapt to the full range of light. This sight can be mounted ultra-low for superior compactness or high enough to clear iron sights. 30mm main tube. Finish: Matte Black. Weight: 5 oz. Rings not included.