Things I liked:This is a great Sporter class rifle, you will hit the 10 ring, only if you can! This rifle will shoot an inch group at 50 yards in wind, and a 5shot group will look like you only took one shot. And this rifle only needs 2000 psi so it can be easily pumped with a hand pump, or it will extend the life of your tank because it does not use as much air. And this is a very quiet air rifle, not like the AAs200 which was killing my ear every time someone next to me shot it...challenger has a wonderful, crisp triger that is fully adjustable down to a half a pound. Things I would have changed:A better rear sight. What others should know:I went to competition with this rifle, in my first year of shooting. I shot a 479 and got 9th in the state. now I am shooting 490-511.
Things I liked:Cheap, works, easy mounting/dismount with a coin. Things I would have changed:I have an older sight, from 2012 on my Crosman Challenger. It has a metal locking knob, and new ones have a plastic one that might strip out. What others should know:This sight is well built, but when it gets old it tends to jump around even on my PCP challenger. Although still accurate enough for me to win the American Legion national sporter championship with it, so I guess I can't complain.
Also, old ones have the rubber eye cup. New Crosman Challengers don't have the eye cup.