M30 Luftwaffe drilling ("triple") was a survival weapon issued to Luftwaffe pilots during World War II. In the event that a pilot was shot down it was intended to be used for defense and for hunting game to stay alive until rescue.
For maximum versatility the M30 featured two 12 gauge shotgun barrels, and a 9.3x74mmR rifle barrel. They were manufactured by the German firm JP Sauer.