at the moment tasco 3-9x32 ao airgun scope and 2 piece 4 bolt sportsmatch mounts, every screw on the scope needs to be thread locked or the head covered with a dab of clear nail varnish, tried the scope out before thread locking etc and lots of bits started to come loose but no problems since and no movement from scope or mounts before or after, not the best scope in the world but for its price and versatility i have no real complaints, i prefer fixed magnification and fixed ao, but for messing with and for getting some idea of what you like and don't like in a scope i think it would make a good starting point
HTH
great gun for $300 my 52 cost me more than that just shy of 18 years ago, enjoy
fin