Unlike normal shotguns, the Banshii shoots off a short beam of energy when fired that is similar to a slug. Due to this, it can serve more as a long-range energy cannon instead, since the energy blast can travel quite a distance. However, compared to other weapons, the projectile is not hitscan, so leading the target is advised. Its projectile is always a one hit kill, but can't pass through walls.
The Banshii can also serve as a powerful anti-air Scorestreak weapon, but is almost useless against ground-based scorestreaks. It can one-shot UAVs and Counter UAVs, three-shot Wraiths and six-shot Motherships but it takes nearly fifty shots to destroy a Cerberus and does nearly no damage to any other ground-based scorestreaks.