Only rifle I ever had that would not hold zero with a scope between shooting it and taking home and taking if out again. The way the receiver cover screws onto to plastic receiver let the zero move. The scope mounts to sheet metal receiver cover and cover has two screws to hold it in place but no way to lock it into one position. The receiver and cover needed dimples to securely locate receiver cover to receiver so it wouldn't shift around once screws were tightened.
