The G3KA4 is a carbine variant of the G3 rifle. The G3KA4 is a carbine battle rifle manufactured by Heckler and Koch that chambers the 7.62x51mm NATO round. The G3KA4 is categorized as an assault rifle in the Rainbow Six universe. The G3KA4 appears in Tom Clancy's Rainbow Six 3: Raven Shield Athena Sword, Tom Clancy's Rainbow Six: Vegas, and Tom Clancy's Rainbow Six: Vegas 2.