Hit roll, if necessary. (I forget if you need to actually roll to-hit while grappled).
Rolled 1d20+1 : 2 + 1, total 3
Add +2 if the weapon's modifiers apply.
And here's damage. I don't know how MU scale damage translates to regular scale. So I'll just roll!
Rolled 1d10+2 : 8 + 2, total 10