III号突撃砲
The 56-calibre long 8.8 cm KwK 36 was chosen for the Tiger. A combination of a flat trajectory from the high muzzle velocity and precision from Leitz "Turmzielfernrohr" TZF 9b sight (later replaced by the monocular TZF 9c) made it very accurate. In British wartime firing trials, five successive hits were scored on a target at a range of . Compared with the other contemporary German tank guns, the 8.8 cm KwK 36 had superior penetration to the 7.5 cm KwK 40 on the Sturmgeschütz III and Panzer IV but inferior to the 7.5 cm KwK 42 on the Panther tank under ranges of 2,500 metres. At greater ranges, the 8.8 cm KwK 36 was superior in penetration and accuracy.