Special Warfare Combatant-craft Crewmen from Special Boat Team 22 carry out small arms training with M4 CQBR carbines.
Aside from being proficient in the various weapons systems mounted on their boats, SWWCs are also proficient with a range of personal weapons.
A typical loadout for a SWCC is M4A1 or CQBR carbine as a primary weapon and a SIG P228 9mm pistol as a secondary.