The Torque Bow's bladed bow fires grenade-tipped arrows with tremendous accuracy at considerable range. It's even possible for a Torque Bow's arrow to fly through the head of an enemy and stick to the skull of another. It's a weapon to be used behind cover when you have time to fire it accurately. It's also the Locust's go-to weapon for medium-long-range combat and it's most often wielded by the Theron Guard and Palace Guard.
The Torque Bow was first introduced in Gears of War 1.