Holosun Technologies SCRS, Green Dot Sight, Non-Magnified, Fits 509T Footprint, Green 2 MOA Dot, Matte Finish, Black, Solar with 2032 Battery SCRS-GR-2
Specifications:

Magnification	1x
Objective	20mm
Field of View
Eye Relief	Unlimited
Dot Size	2 MOA
Tube Diameter	20 MM
Length	1.70"
Weight	2.45 oz
Finish
Battery	Internal Rechargeable Battery
Reticle	2 MOA Green Dot
Adjustment Size	1.0 MOA
Proofs	IP67 Waterproof
Optic Coating	Multi-Coated
Windage Elevation	Adjustable