Firearms The Buzz Saw MG42 Light Machine Gun – Full Auto! Emmanuel October 31, 2015 20 Views The “Buzz Saw” MG-42 Light Machine Gun – The MG42 is a Belt-Fed, Open-Bolt, Air-Cooled weapon. It has a cyclic rate of anywhere from 1000-1500 rounds per minute (depending on bolts and ammo used.) This one is slightly over 1100 rpm! Enjoy!