Single Trigger (in a double barrel gun)

One trigger that, with two pulls, fires both barrels in sequence. The two basic designs are operated either by inertia or mechanically. Inertia triggers, as found on Perazzi and Browning Superposed guns, employ a sliding weight, which under recoil increments the trigger's function to the next barrel. Mechanical triggers, as found on Boss guns, increment their function to the second barrel when released after the first pull.

Inertia Single Trigger:

Inertia triggers, as found on Perazzi and Browning Superposed guns, employ a sliding weight, which under recoil increments the trigger's function to the next barrel

Mechanical Single Trigger

Boss Single trigger with its rotating turret

Westley Richards mechanical single trigger

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