Either they're that stupid or they think that Grif is that stupid. Chances are it's the former.

The mook with the spraygun doesn't stand a chance. He doesn't even notice the shot before he's slumping over his gun and twitching. This action does, however, attract the attention of the one holding the pair of rifles, and he swings both guns up to bear on Wash. "Sprock off!"

Unfortunately for him, the built-in safeties refuse to fire when the gun's barrels are in danger of melting, so he simply chucks them both at the Legionnaire and turns to run, abandoning his fellows. Both rifles, predictably, fall well short of the mark. Fortunately for him, he's a better runner than he is a marksman, but the Legion flight ring is still faster.

The comms, however, are still out.