The gun was fitted in a barbette with 45 traverse to each side.

These guns were fitted with the gun's M2A3 ground carriage and its gun shield.

To give the crew some protection from bullets and shell fragments, the gun was fitted with a shield.

"Every gun is fitted to its owner and would be useless on anyone else," Brucco said.

Though photographs show the gun port, the gun itself was probably never fitted.

There is no record that this gun was fitted.

As the war progressed the guns were more often fitted with gun shields.

Two guns were occasionally fitted, but this had a severe effect on performance, which was at best little better than that of earlier models.

Two guns could be fitted in the nose, but these were seldom carried.

Two more guns were fitted to fire directly forward.