It originally had an electrically fired 10.5 cm 1918 light field howitzer (10.5 cm le FH184), with a muzzle brake, installed.2 In 1944, the muzzle brake was deleted to economize on production.2
The 105 mm gun fired a 32.7 lb at a velocity of 1,772'/sec to a range of 9,077 yards.3
The first prototype was completed in March 1942.
StuH 42: 1,210
Production: 1942 - ?4
StuH 42 Ausf F; Sturmhaubitze 42 Ausf F: Had the 10.5cm le FH 18 howitzer.4
StuH 42 Ausf G; 10.5cm Sturmhaubitze 42 Ausf G; Sturmgeschütz III mit 10.5cm StuH 42 L/28.3; StuG III fur 10.5cm StuH 42: Had the 10.5 StuH 42 L/28.4 Late models had no muzzle brake.4 Had remote controlled machine gun.4 A few had the Saukopf gun matle.4
From 1943 these were issued to Sturmgeschütz detachments. At Kursk there were 68 available to Army Groups Center and South.