@PrintsandtheRev The Kalashnikov machine gun in its basic form weighs 11.4 kg / 25.1 lbs, and with such an ammunition box - at least 14.4 kg / 31.7 lbs (500 rounds) or 15 kg / 33 lbs (600 rounds). I ran with one in a bulletproof vest and I will tell you that 100 rounds will be enough.