I recently picked up a damascus A.J.Aubrey shotgun in slightly loose, but shootable, condition. I've had a number of these old, store catalog, shotguns over the years but never an Aubrey. I have noticed that the firing pins appear to be free floating. I say that because when you hold the gun skyward you can see the pins retract, and when pointed toward the ground they protrude through the standing breech. Is this the way the firing pins are supposed to be with Aubrey's?