Vortex StrikeFire II 1x30mm 4 MOA AR-15 Red/Green Dot Sight

Vortex StrikeFire II 1x30mm 4 MOA AR-15 Red/Green Dot Sight
Magnification: 1X 
Objective Lens Diameter: 30mm 
Reticle: 4 MOA illuminated red/green dot 
Eye Relief: Unlimited 
Tube Size: 30mm 
Adjustment Gradation: 1/2 MOA 
Max. Elevation Adjustment: 100 MOA 
Max. Windage Adjustment: 100 MOA 
Parallax Setting: Parallax free 
Waterproof: Yes 
Fogproof: Yes 
Battery: (1) CR2 
Length: 5.6" 
Weight: 7.2 oz. 
Mfg. Number: SF-RG-501