The Special Operations Peculiar MODification (SOPMOD) kit is an accessory system for the M4A1 carbine, CQBR, FN SCAR Mk 16/17, HK416 and other weapons used by United States Special Operations Command (USSOCOM) special forces units, though it is not specific to SOCOM. The kit allows US Special Operations Forces personnel to configure their weapons to individual preferences and customize for different mission requirements.
SOPMOD Block I
US Army 75th Rangers using multiple Block II accessories on their rifles at night. Note the Insight WMX 200 light mounted on the rifle of the operator on the right.
The M4 carbine is a 5.56×45mm NATO, gas-operated, magazine-fed carbine developed in the United States during the 1980s. It is a shortened version of the M16A2 assault rifle.
A 10th Special Forces Group soldier with an M4 carbine during an exercise in July 1995
A U.S. Army 82nd Airborne soldier holds an M4 carbine in Vitina, Kosovo in January 2000 during the NATO-led KFOR mission, the first operational use of the M4 by U.S. troops
M4 with M68 Close Combat Optic and AN/PAQ-4
M4 with the newer, redesigned telescoping stock