Phase I upgrades the Army’s M4s to the Special Forces’ M4A1, while Phase II explores future improvements for the M4A1 Carbine to deliver enhanced reliability, durability, ergonomics and zero ...

“The Sig Sauer Rattler is one of the systems under review for meeting Special Operations Forces requirements ... and buttstock kit solution for the M4A1 platform,” according to Defense ...

To build a classic M4 in Gray Zone Warfare based on the old-school CAR-15, which saw some use by Special Forces in Vietnam ... as buying a fully functional M4A1 from his shop.

The Joint Chemical Agent Detector (JCAD) M4A1 is a pocket-size, rugged, handheld detector that automatically detects, identifies, and alarms to chemical warfare agents and toxic industrial ...