Knight armor varied in weight, plate mail was lighter weighing about 45-70lbs, while full-plate generally exceeded 150 pounds and was worn by heavy Cavalry only. As a Marine infantryman who has served in combat my battle load was 20 magazines (I carried 10 extra compared to the standard grunt because I was the squad leader) at 3 pounds a piece. The M-16 is a little over 7 pounds. 2 ballistic plates in the body armor made the flak jacket weigh roughly 30 pounds. The helmet weighed 3.5 lbs. 2 frag grenades 2 flash bangs =5 pounds give or take 1 lbs. 3 liters of water, smoke grenade 3 flares, green red and white parachute, that's another 10 pounds. Last but not least the PRC-119 radio with 2 batteries carried in an ALICE pack with frame is roughly 20 pounds.