I'm dumber than a blacksmith's anvil when it comes to air rifles. I only had one, a Daisy BB w/open sights when I was five or six and only used it to shoot sparrows and my sister.

My son bought his two offsprings each a Stoeger X20 17 cal pellet rifle w/scope for Christmas. Well, the first time out one scope took a hike, its a baby rattle. The best I understand(?) it, a X20 uses a air piston not a spring to launch pellets so can I put one of my CF rifle scopes on his boomer or must Pop spring for a air rifle only scope?

Bill