Narsil

Models using a Master-Forged weapon do not suffer the -1 penalty to the Duel roll for using a two-handed weapon.

A hand-and-a-half weapon can be used as either a single-handed weapon or a two-handed weapon. Whenever a model armed with a hand-and-a-half weapon is involved in a Fight, the controlling player must decide at the start of the Fight whether they will be using their weapon as a single-handed weapon or a two-handed weapon.