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.45 Auto vs .45 ACP

Discussion in 'Caliber Corner' started by TheBigCroaker, Jun 29, 2011.

  1. TheBigCroaker

    TheBigCroaker

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    Being new to 45's, could someone tell me what the difference is (if any) between ammo marked ".45 Auto" and that marked ".45 ACP."
    Are they identical? Can either be used in a Glock 21.
    I would definitive answers, not opinions, please
    Thank You.
     
  2. HGun17

    HGun17 Member

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  3. TheBigCroaker

    TheBigCroaker

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  4. vafish

    vafish

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    .45 ACP , ACP=Automatic Colt Pistol Same thing as .45 Auto.

    Just don't get .45 GAP or .45 Colt they are different things.