Learn more about why people argue about 9mm vs. .45 ACP, why these two rounds have been hotly debated in the handgun world, and the pros and cons of both.
Carry Calibers: .40 S&W Vs. .45 ACP Vs. 9mm - Gun Digest
Choosing Between a 9mm vs. .45 Handgun - SSP Firearms
9mm vs .45 ACP [Debate Finally Settled] - Pew Pew Tactical
9mm vs 45 ACP: Which Is Bettter for Self-Defense? - Sniper Country
9mm vs .45 ACP [Debate Finally Settled] - Pew Pew Tactical
FBI Training Division Justifies 9mm Caliber Selection -The Firearm Blog
Compare 9mm, 40 S&W and 45 ACP in Self-Defense Shooting?, Page 3
9mm vs. .45 ACP - Caliber Comparison - The Broad Side
Calibers for Beginners: What You Need to Know About .45 ACP - The Truth About Guns
Testing 5.7 vs 9mm - Caliber Comparison