M231
assault rifle
Deutsch: Die M231 ist eine verküzte Version der M16 um die Waffe in Panzern zu verstauen.
English: Designed by the Rock Island Armory as a dedicated Firing Port Weapon (or FPW) for the M2/M3 Bradley AFV, the Colt M231 FPW remains in service, although all but the rear two firing ports on the Bradley have been removed.
中文：柯爾特M231射孔槍 (M231FPW Firing Port Weapon)由岩島兵工廠(Rock Island Armory)的設計通過武器試驗而生產。為M2佈雷德利步兵戰車內的6個射孔裝備，後來佈雷德利側面的兩個射孔取消，M231成為車組成員的自衛武器。
