Can only be used in conjunction with an equipped Heavy Bowgun (HBG).

If you do not move on your turn and take the Attack action, attacking with this weapon. Before rolling, you can use a bonus action to expend 1 of this weapon's charges, activating Wyvernsnipe for this turn. On your first attack after doing so, you gain +10 to your attack rolls, you deal an extra 3d12 piercing damage and critical hits are scored on a hit roll of 18-20. In addition, for this turn your Heavy Bowgun range is doubled.