Lever locked to the right the rotary bolt is out of the slot. Lever held to right the rotary bolt is out of the slot. If the rotary's out of the slot, no interference with the extension and the gun will close no matter whether trip or your thumb is restraining the bolt. If the gun opens and the trip pops up and restrains the bolt (and the lever) you've got all your parts. I'm not sure how much better than that it can get. My sense of Foxes on opening is that the wedge end of the rotary does allow the gun to "start" to open well before the trip has any chance of operating. The breech is "starting" to open as soon as the mating wedges of rotary and bottom of extension slot are even slightly out of full contact. You can see how breech opening relates to bolt retraction by moving the lever very slowly, letting off slightly, and repeat. Doesn't have a thing to do with the mechanical operation of the trip. The trip doesn't open the breech lockbolt; it keeps it from returning into the slot while the extension is above the slot and of course the bottom of the extension is the actuator which "trips" the trip and allows the bolt to return into the slot and thru the extension on its own (spring assisted of course) without full use of thumb, brain, etc.
jack
