Smith & Wesson M&P 5.7 - Tempo Barrel System
This video explains the innovative Tempo Barrel System in the Smith & Wesson M&P 5.7 pistol. Senior Product Engineer John Miles details how the system manages the high pressures of the 5.7x28mm cartridge, preventing issues common in traditional blowback designs. The system utilizes gas ports and a two-part barrel to delay slide action until the bullet exits, ensuring proper case fire-forming and consistent performance.











