I am wantingto try out the 45's also, What's the difference between ACP & GAP?
i did a quick google search
What is the difference between a .45ACP and .45GAP caliber ammunition and what do I ... The 45 GAP is .138 inches shorter then the 45 ACP.
Ammo tends to be a lot more expensive for the .45 GAP (when you can find it, unless it's on "closeout").