If you're buying your first handgun, 9mm is the right starting point — and almost everyone agrees on this now. The FBI transitioned to 9mm in 2015 after ballistic testing confirmed that modern 9 … read more

Reviewed by Ricky, Staff Member · Last updated: May 6, 2026 The Core Difference: Bullet Diameter and Energy Delivery The 9mm Luger fires a .355-inch bullet; the .45 ACP fires a .452-inch bullet … read more

The Core Difference: Energy, Platform, and Purpose The 9mm and .357 Magnum are both proven defensive cartridges, but they live on different platforms and serve different primary roles. The 9mm is the … read more

The Glock 19 and SIG Sauer P365 are the two most popular 9mm pistols in America right now — and for good reason. Both are reliable, accurate, and proven in carry and defensive use. But they serv … read more

Reviewed by Ricky B., Staff Member · Last updated: May 5, 2026 The Core Difference: Bullet Diameter and Energy Delivery The 9mm Luger fires a .355-inch bullet; the .45 ACP fires a .452-inch bul … read more