Now We Know Why The US Military Switched To 9mm Ammo!
The US military's transition to 9mm ammunition, 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 reduced weight and cost, increased magazine capacity, and practical effectiveness demonstrated by faster follow-up shots. The military's use of ball ammunition, due to war crime regulations, is a significant consideration.












