tiger 131 currently needs donations to help pay for repairs to its engine, to keep the tiger in working order @Bovington tank museum. view engine bay, engine removed. Tiger I saw combat on all German battlefronts frontal hull armour 100 mm, frontal turret armour of 120 mm, 200 mm at the mantlet. The gun's breech and firing mechanism were derived from the famous German "88" dual purpose flak gun. The 88 mm Kwk 36 L/56 gun was the variant chosen for the Tiger and was, along with the Tiger II's 88 mm Kwk 43 L/71, one of the most effective and feared tank guns of World War II. PzGr.39 (Armour Piercing Capped Ballistic Cap) PzGr.40 (Armour Piercing Composite Rigid) the Tiger I costing over twice as much as a contemporary Panzer IV and four times as much as a StuG III assault gun. Hl. Gr.39 (High Explosive Anti-Tank) Sch Sprgr. Patr. L/4.5 (Incendiary Shrapnel)