BudsGunShop.com - Difference between .45 ACP and .45 AP
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What is the difference between .45 ACP and .45 AP? I read somewhere it only has to do with the specific company doesn’t want to acknowledge Colt but other Spingfield Armory 1911’s say they are .45 ACP and this one only says .45 AP.
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Joseph, nothing, this Sringfield RO is also chambered in 45ACP. Same ole 45ACP as everyone else.