A fastener driver includes a housing, a cylinder disposed within the housing, a piston positioned and moveable within the cylinder, and a driver blade. The driver blade is moveable with the piston from a first position toward a second position along a longitudinal axis during a fastener driving operation. The driver blade includes a body defining a first end, a second end opposite the first end, and a plurality of teeth between the first and second ends. The teeth and the first end of the driver blade each have a thickness that is uniform and defined in a direction transverse to the longitudinal axis. A total length of the fastener driver as measured between a distal end of the nosepiece and a distal end of the cylinder is less than 11.4 inches (289.6 mm).