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ATK [ATK] said a modified variant of its Mk44 Bushmaster Automatic Cannon medium-caliber weapon was recently type classified as the GAU-23 by the Air Force for integration on AC-130W gunships.
The GAU-23 Bushmaster Automatic Cannon uses the 30x173mm PGU-13, PGU-15, and PGU-46 ammunition. ATK spokesman Rod Gibbons said the PGU-13 is a high explosive incendiary round used on light material targets. PGU-15 is a low-cost, target practice round ballistically matched to the PGU-13. PGU-46 is a modification of the PGU-13,...