Converts the safety from automatic to manual, or vice versa. Tighten it down to make the safe manual, loosen for automatic.
The screw does not convert the Lefever from auto to manual safety. The screw locks the safety OFF. With the barrels held wide open, the screw can be turned in to a hole in the safety slide and holds it back, always OFF safety, until that action is reversed. I use mine that way, at the range. Reverse it for field use. One more brilliant detail about the Lefever design.
To 2-Piper: Thank you for your last explanation about the doll's head. You and I are usually like two barrels on a double gun, on most subjects and the only reason we were not, on this one was because I misunderstood your position. I'm happy for that to be the case, this time. I certainly agree that the rounded, knob shape of the extension has nothing to do with holding the barrels down. Lots of other guns, Parkers among them, have doll's head extensions that do not have locking lugs built into them and, as you said, simply resist the barrel's tendency to move forward, when fired.
"Together again".
Thanks again,
