Varangian Arms: Pathfinder

This week, I'd like to propose another idea for Varangian Arms, the Pathfinder. The name comes from a firearm in a fantasyroleplaying game used by a noteworthy non-player character (NPC). The Pathfinder is a double-barreled pistol with two triggers, one for each barrel. It is an over-under design (as opposed to a side by side one), and must utilize as few moving parts as possible.  

-The barrels should be over under rather than side by side.

-Each separate trigger should fire a barrel independently.

-The system should have as few moving parts as possible. (A pair of solenoids may allow for electronic ignition.)

-It should be reloaded by a top break or detachable barrel assembly.