The Heckler & Koch HK CAWS, known as CAW for short, is a prototype full-automatic, 10 round, 12 gauge, bullpup shotgun. It was briefly created as a joint effort by Heckler&Koch and Winchester/Olin.
- Main article: Peace Walker Incident
During the Peace Walker Incident, Big Boss's mercenary unit, the Militaires Sans Frontières, received design specs for the CAW weapons system as a reward for their services in aiding a group in capturing an enemy outpost, eliminating vehicle units, defending key bases, capturing enemy facilities, and capturing enemy bases during their missions outside Costa Rica.
During the 1980s, testing of the CAWS began to develop a new generation personal firearm capable of firing high-impulse, multiple projectiles within an effective range of 100-150 meters. Although it was tested by the United States military, the project ended up cancelled and production halted.
Behind the scenes
In Metal Gear Solid: Peace Walker, the CAWS design specs can be procured via Outer Ops by chance, with a difficulty of S or S+ giving a greater chance. In real life, the CAWs was developed during the 1980s.
- "A fully automatic shotgun, created as a prototype to explore the potential of next-generation personal close-combat weapons. It fires a specially designed 12-gauge shell that allows for both high ammo capacity and a high rate of fire.
This is the final word in shotguns, a gale-force barrage of lead in a compact package. If you're looking for maximum attack power at point-blank range, look no further - this is the weapon for you."
- ―CAW weapons description in Metal Gear Solid: Peace Walker