The Remington Airmaster 77 is a Crosman 2100 that looks different. Mine is a great shooter. The problem with the Airmaster is that it only comes with a cheapo scope. I put a Leapers 4x32 airgun scope with AO on it, and it makes a fine setup. The 2100 can be bought with the same scope, or with no scope. Interestingly, my Remington (made by Crosman) doesn't like Crosman pellets very much, as they seem to be a very loose fit into the breech. But the gun likes so many other pellets that it is easy to come up with winners. RWS Hobbys, Diablo Basics, Super H Points, Gamo Match wadcutters, Gamo Hunters, Beeman Laser Sports, Silver Bears all do very well in my gun.
jon