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Here’s What You Need to Remember: In reality, the Glock 21 is actually one of the best, and most affordable, .45 ACP pistols on the market. The Glock 21 carries thirteen rounds in a double stack ...

Key point: Semi-automatic pistols have come a long way. The .45 Automatic Colt Pistol round, or .45 ACP as it is commonly known, is fairly controversial. Invented in 1905 by prolific firearms designer ...