Master-Crafted Weapon
A master-crafted weapon follows the normal rules for the converted weapon, except that it allows one failed roll to hit per turn to be re-rolled. Such a modified weapon is taken as an upgrade for a weapon already carried by a model and must be represented by a suitably ornate weapon on the model itself. A grenade cannot be master-crafted.
The upgrade cost of 15 points is added to the normal cost of the weapon but only the upgrade cost is taken against the points limit on wargear taken by the model (so a master-crafted power weapon costs 25 points but counts as only 15 points against a character's Wargear limit).