A power tool having first and second housing portions, a power train, a mounting hub, a lock bar and an actuator. The second housing portion is disposed about the first housing portion for pivoting motion about a pivot axis. The powertrain has an output member that extends from the second housing portion and which is movable relative to an output member axis. The mounting hub is coupled to one of the first and second housing portions. The lock bar is mounted to the other one of the first and second housing portions. The actuator is slidably received in the other one of the first and second housing portions and cooperates with the mounting hub to selectively permit the second housing portion to pivot about the pivot axis relative to the first housing portion.