How the Military Perfected the M4
This video details the M4A1 Block II, the standard for special operations until the URGI, highlighting its evolution from the M16. It covers the SOPMOD program's goals to enhance lethality and survivability, focusing on components like the Surefire SOCOM suppressor, Daniel Defense RIS II rail, and Geissele triggers. The review emphasizes the Block II's reliability improvements through specific barrel profiles, gas systems, and internal upgrades, making it a robust and accurate platform.









