King Crab with AR-14 Sheathed Probe and Chameleon LPS as fixed components.
The Probe is a cockpit mod, and also doubles as an EWS and Active Probe. It is better than the Watchdog CEWS, but worse than the Nova CEWS. Same probe found in the Elite Bushwacker.
Both the Probe and the Chameleon LPS cannot be replaced. Mech does not have any other quirks and is otherwise a standard King Crab.