Striker Model 503 .17

Can anybody tell me when these were made? For how long? Anybody have one that can tell me how they shoot? What's the going rate for one of these? Not much info out there in Google, so hopefully somebody can shine some light on this pistol for me. Especially the going rate, due to the fact that I may be purchasing one and don't know what a fair price is. Thanks in advance.

I bought one about five years ago. Can't remember what I paid for it but I don't think it was more than $250, maybe $300. Mine is picky about what it likes to shoot.

It's not much more than a novelty gun. If that's what you want it for it's fun.