The MG 81Z was found in many unique installations in Luftwaffe combat aircraft, such as a pair of MG 81Z (for a total of four guns) installed in the hollow tail cone of the Dornier Do 217 K-2.
MG 81Zs were found in diverse configurations on Luftwaffe fighter planes, including two MG 81Zs (totaling four guns) installed within the hollow tail section of the Dornier Do 217 K-2.