The side gun packs added to the forward fuselage of early PBJ-1, B-25C, and B-25D Mitchell bombers played a key role in enhancing their strafing capabilities. The dual gun pack was the first configuration used, featuring two .50-caliber machine guns mounted together on each side of the aircraft.
Key Details on Dual Gun Packs:
Design and Function: The dual gun packs were designed with two smaller holes for ejecting links as the guns were fired, and a larger hole for expelling spent shell casings. This design was crucial in ensuring that the guns could operate smoothly without jamming during intense strafing runs.
Origins and Production: Initially, both single and dual gun packs were handcrafted at Townsville, Australia, where field modifications were commonly made to adapt the bombers for the strafer role. As these modifications proved effective, production was later standardized and taken over by Consolidated, a major aircraft manufacturer, to equip more B-25s with these gun packs.
Usage: These gun packs were particularly prevalent on early PBJ-1s (the U.S. Navy and Marine Corps variant of the B-25), as well as on B-25C and B-25D models. They allowed these aircraft to deliver concentrated firepower during low-level attacks, making them formidable against ground targets.