Now We Know Why The US Military Switched To 9mm Ammo!
The US military's decision to adopt 9mm ammunition for sidearms, initially in the 1980s and continuing with the Sig P320, was driven by several key factors. These include standardization with NATO allies, logistical advantages like lighter weight and lower production cost, increased magazine capacity, and practical effectiveness, which emphasizes faster follow-up shots and more hits on target for the average soldier compared to larger calibers like .45 ACP. The recent adoption of the Sig P320 highlights continued adherence to these principles, with modularity being an added benefit.













