I have this (http://swfa.com/Weaver-4-12x44-4044-Rifle-Scope-P40586.aspx) on mine (Marlin 917VS). For the money it is a great capable little scope. It tracks well, is clear and the turrets are finger adjustable. I think Natchezss.com has them for $119.
I paid $229 for the gun about 10 years ago when they first came out. I was working at a gun shop at the time and got a good deal. Anyways, I felt that scope does the gun justice with 4x for the lowest setting which is good for close work and can still turn it up if I want.
