[Trexmaster]

Using for testing, I tried seeing what it functioned with from both things it -used- to qualify for and -should- qualify for now.

Flank still gives a damage bonus to it, despite it being the only invalid type in the game for that passive.

Covering Fire and Parting Shot do not function at all, while they allow you to select and use the skill, it will trigger without anything happening, no debuff will get applied, and no attacks will be made, respectively. You don't even -move- after Parting Shot with this.

Dynamic Shooting doesn't grant any hit bonus to it, despite it being a qualifying weapon type.

Magic Gunner Shells don't proc with it on hit.

Focused Mind doesn't grant any hit bonuses with Overcharge or Charged Shot with it.

Spark Drive doesn't grant Charged Shot on critical with it.

Volley Formation doesn't function at all with it, though this one may be debateable.

At the very least dagger passives don't function for it, so, something went right?