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'''.50 Action Express''' is a type of [[ammunition]] for firearms. It is classified as a <span style="color:#0000AA">'''(P)'''</span>istol caliber. The first firearm to be chambered in .50 AE was the [[AMT Automag V]], but it was popularized by the [[IMI Desert Eagle Mark XIX 50|Desert Eagle]].
.50 is pronounced ''fifty Action Express''.