Just out of curiosity I spent some time looking for an ultra compact scope that could be fitted to a pumper that would not extend past the receiver, allowing full access to the grip area. I ran across this unusual option, a zero eye relief scope for non-recoiling airguns. Since it can be mounted 2 to 3 inches further back than normal, it should not extend past the receiver. Finding a scope mount that attaches to the receiver is still a problem, but Baker has one that fits the newer 397/392. An interesting alternative to a scout scope.
Chuck
Chuck