From: Planning the end of the world, well out to 2023!
In the game, USS Allen (Sampson class DD) is armed with 4x4in/50 guns and 4x triple torpedo tubes.
However, her after action report for Dec. 7 mentions that her crew "manned Guns No. 5 and No. 6 – 3"-50 caliber" and that she expended 57 round of 3in ammo, splashing one plane (see http://www.ibiblio.org/hyperwar/USN/ships/logs/DD/dd66-Pearl.html ).
Google comes up with conflicting info, apparently she lost half her torpedo tubes in exchange for either DC projectors and 20mm guns or the 3in/50 guns.
Does someone has more definite info about her armament?
No definite mention about rearming but:
On 23 August 1940, the ALLEN was recommissioned. While others of her vintage, such as the CONWAY (DD-70), CONNER (DD-72), and STOCKTON (DD-73), were among the fifty destroyers transferred to Great Britain in exchange for naval bases, the ALLEN was ordered to join Destroyer Division 80 on the West Coast. In December 1940, she proceeded to Pearl Harbor, and on the morning of 7 December 1941, she was moored in East Loch, to the northeast of Ford Island and just southeast of the hospital ship SOLACE (AH-5). During the Japanese attack, Elliot R. Milliken was gun captain of the No. 6, 3-inch/.50-caliber gun. When a shell jammed in the gun, he gave no thought to his personal safety and forcibly rammed the fused projectile from the barrel of the gun, promptly putting it back in action. The destroyer went on to assist in splashing three enemy planes, sustaining neither casualties nor damage. The ALLEN remained on antisubmarine patrol in the Pearl Harbor Defensive Sea Area where, on 27 December, she rescued twelve of the crew from a merchant ship sunk by an enemy submarine
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