Vokul® Tactical Mini Micro Reflex Red Dot Scope Sight with QD Quick Riser Mount for $18.19 @Amazon

Coupon code: SYUVMV8S
Resettable windage and elevation adjustment
With a quick release high weaver mount
Reticle Type:Red Dot
Mode:QD Micro
Rail Type:20mm Weaver rail
https://www.amazon.com/dp/B01AXRC82W