Good roofing nailer. Comes with only a contact trigger (i.e. black) but can be converted into a single shot (i.e. fired sequentially) nail gun by replacing the existing trigger with the SEQ4 set (i.e. gray trigger plus spring) - this is not in Bostitchs Instructions included. Comes with nailer but easy to make. Besides, it's just nailing - no cover; however, the N66C Nailer Case, Bostitch part number B284102001 will do.