Title of 1st photo: Front view of static test rig - simulating arrangement of 3cm., MK. 108 cannons mounted in Bf. 110G- 4/R9., Schragbewaffnung-Schrage Musik - upward firing. Summer, 1943 at Unterluss. Blurb on rear of photo states only two guns are to be fired, the middle gun is not loaded. Other photo shows side view. RonB.