PlayStation Move Sharp Shooter

An accessory for the PlayStation Move motion controller that adapts both the motion controller and navigation controller into a submachine gun form, which features an adjustable shoulder support. The motion controller is fitted into the gun barrel so that the motion controller's T trigger is interlocked with the trigger, and the navigation controller is clipped into a holder below this gun barrel. However, the accessory goes far deeper by adding several extra buttons and controls via the EXT connector on the base of the Move Motion Controller.

Source: Wikipedia, "PlayStation Move", available under the CC-BY-SA License.