Almost all Parker questions are answered in TPS.
I suggest you take the sidelocks off before you use the gun much and make sure the pivots, sears, and trigger arms are adequately lubricated. It's easy to do if a person is cautious and deliberate. Unless maintained , these old guns can get dry. Don't attempt to lubricate it from the outside because oil should not run into the stock head. In some examples there is a lot of dried crud in the locks and you can drop the whole lock into solvent without concern.
Some of us hunt shoot and hunt regularly with these hammer guns. It brings a new dimension to the hunt.
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