Why does the military use the 9mm?

I know its NATO standard but why do some Spec Ops use the .45acp..And also with the SAS why would they use the 9mm since the idea to wound a instead of kill wouldnt effect them as much since they are like a hit and run thing most of the time wouldnt the .45 make more since like in the ump45 since it does more damage meaning quicker kills?

5 Answers

  • Mark F
    Lv 7
    8 years ago
    Favorite Answer

    0.45 ACP has a lower muzzle velocity which makes it superior for use with a sound suppressor than 9x19 Parabellum - hence popularity with special ops. Due to its lower velocity the heavier 0.45 ACP using military ball ammunition produces 425 Joules of energy at the muzzle compared to the lighter 9x19mm Parabellum which produces 583 Joules of evergy at the muzzle.

    Yes that's right, the supposedly underpowered and wimpy 9mm actually puts more energy into the target than the 0.45 ACP which myth has it is the greatest thing since sliced bread. In real terms when firing military ball ammo into ballistic gel blocks both rounds produce nearly identical wound channels about 14-inches deep and neither is a brilliant manstopper. No sidearm firing military ball ammo is.

  • Anonymous
    8 years ago

    The main reason is the US didn't shell out the cash in the 1940-1950 to provide .45 ACP for the rest of NATO. So it did not become the standard round- there were also fights over what the stnadar riffle round should be the US favored the NATO 7.62 X 51 MM and the British favored the 7 mm NATO

    so there may have been a reluctance to push the pistol issue.

    Personally considering what ultimatly happend I wish we could fire up the deLorean or Police box

    and show people the M16 and the 5.56 NATO so it would be prevented as well as a 10MM.

  • Anonymous
    8 years ago

    The .45 has more stopping power. Yes the 9mm is NATO standard, but as you pointed out, Spec Ops has pretty much their choices of weaponry, and stopping power is exactly why they use the .45.

  • Anonymous
    8 years ago

    The US military uses the 5.56 NATO round. It is a little bit wider than an average bb pellet. The. 45 is huge compared to that. Trust me it'll get the job done.

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  • 9mm's hold more rounds in the magazine.

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