Barska plinker 22 is a cheap starter scope that will work great on airguns from 550fps on down. Had one on a Gamo Recon that worked just fine. Its parallax-free at 50 yards but it looks and shoots great at 20 yards. At 10 yards it was not so good, but it has a fast focus eyeball that moves like butter and it comes with 3/8" rings that are just fair. over all the scope is fair for $29.99.

Magnification: 4x Objective Lens: 32mm Reticle: 30/30
Field of View (ft@100yds): 29ft @ 4x Exit Pupil: 8.0 mm Eye Relief:
3.0 inch Click Value: 1/4 inch Tube Diameter: 1" Finish: Black
Matte Weight: 16.08 oz Length: 11.93 inch