EoTech G33.STS.BLK G33 Magnifier with Switch to Side Mount Black Finish
http://www.amazon.com/gp/product/B008CXKX7M?tag=sukses2015-20

EoTech G33.STS.BLK G33 Magnifier with Switch to Side Mount Black Finish
Split-second transitioning from CQB to medium range targeting
22-Inch eye relief with windage and elevation adjustments that can be changed by hand
73-degree field of view
Slap to side mount is durable and operates with the slap of your hand
Locking quick detach lever for easy attachment and removal of the optic and the mount