How many rounds are in an M9 pistol magazine?

• A. 15 rounds.
• B. 10 rounds.
• C. 20 rounds.
• D. 12 rounds.

Answer: (A)

Magazine capacity for the M9 pistol is fifteen rounds in its standard issue magazines. This number reflects a practical balance between keeping the grip compact, ensuring reliable feeding, and managing weight and recoil for a service pistol carried by Marines. While there are aftermarket or extended magazines that can hold more rounds, the typical magazine issued with the M9 carries fifteen rounds.