Solar and Battery Powered
This Trijicon Repro is a no brainer as far as reliablilty on the AO is concerned. Rigid Construction, Dual Power. 
This sight can run on it's integrated Solar Array (located on the top of the sight ring), or CR type batteries! This one is a personal 
Favorite of our staff for long, demanding Milsims. 
 
 
 
The  SRS is a highly engineered sealed reflex sight that eliminates 
thetube-effect typically associated with other sealed reflex-style 
sights.
The modern design incorporates a 28mm aperture that allows easier target acquisition.
Its 1.75 MOA dot is small enough for precision and bright enough for speed.
Specification:
Manually Adjustable Brightness Controls
Compact Snag Free Design
Military Grade Aluminum Alloy Housing
Multi-Layer Broadband Anti-Reflective Coating
One (1) AA Alkaline or Lithium Battery