Tool-free thumb wheel depth setting for quick and easy depth adjustments. Side low-nail indicator window allows user to quickly and easily see when it is time to re-load. Overmolded no-mar pad increases visibility and reduces marring on material. Tool-free jam clear eliminates down-time from bent fasteners caught in the nosepiece. Tool-free 360° exhaust channels air and dust away from user. Trigger lock-off allows trigger to be disabled when not in use.