EA HWS EXPS3 Weapon Red Dot Sights w/ G33 Scope (DE)
3x Magnification Scope (With Side Flip Mount)
Eye relief is roughly 3" or 7.6cm which is fairly standard for this style of magnifier.
With QD Throw Lever Mount
Fit to mount on 20mm Picatiny Rail
Come With XPS3 Red Dot Sight
Adjusting windage and elevation