An end effector is provided and includes an outer tube, a coil member, a plurality of fasteners, and an engagement member. The outer tube defines a viewing window and a lockout window. The coil member is disposed within the outer tube. The plurality of fasteners are disposed in the coil member. The engagement member is disposed proximal to the plurality of fasteners and is visible through the viewing window of the outer tube. The engagement member is configured to translate proximal to the plurality of fasteners to provide a count of the plurality of fasteners remaining in the end effector.
