Know Your Weapons: Carl Gustav m/45B (Swedish K) Posted on 11 June 2020 by The Tactical Hermit I remember the first time I heard about this gun was when I read John Plaster’s outstanding book about MAC-V-SOG in Vietnam, Secret Commando’s: Behind Enemy Lines with the Elite Warriors of SOG. If you enjoy Military History, I highly recommend this book. Plaster is the real deal, having written one of the foremost books on Rifle Marksmanship as well, The Ultimate Sniper. Stay Alert, Armed and Dangerous!