I've been shooting this Model 1892 Marlin (32 Long Colt) for a good many years...
I generally take the side plate off of the receiver and clean it after a hundred rounds...
Today I noticed the 3 screws on top of the receiver and I looked inside the action and they screw into NOTHING...
I wonder what their purpose actually is? Some type of optic sights from a century ago?...
Thanks...BCB