Sorry if this has been asked before, but how does the Mercenary Co-Pilot interact with HLC?

With HLC you have to change Crits to Hits.

Merc CoP allows one hit to be changed to a crit at Range 3.

Does the MCoP override the HLC or vice versa?

HLC only changes crits-to-hits on the initially rolled dice. Any crits generated after the roll are still crits.

HLC resolves first, then all other effects you have can be resolved. Unless you are shooting at Omega Leader while they have you looked ...then its crits AWAY lol

The thing with HLC is this: the trigger for turning crits to hits is "immediately after rolling your attack dice." So when you roll your initial pile of dice, this happens. Rerolls or other abilities which gain crits aren't relevant.

Heavy Laser Cannon winds up being a good example for "do what the card says and not what it doesn't say." The card only refers to rolling the dice.

Thank you all.