I'd echo everything said here. Yes the main focus of criticism is the piston as its rolled sheet steel. That said the rest oof the internals are fine with cylinder finish being excellent. The piston gets by. Quite why Anschutz soldiered on with leather piston heads when the whole world was going synthetic beats me. A little more smoothness and power could have been unlocked at the factory but hey ho its history now.
Super accurate guns and largely forgotten nowadays.
Dave