Cat Steel Precision's new 5.7x28mm automatic personal defense weapon. It's break action, and uses 50 round magazines. It can fire up to 1,000 rounds a minute, with relatively low recoil. The weapon is extremely compact, while offering good penetration against body armor. Designed for paratroopers, spec-ops units, vehicle crewmen, and law enforcement.
Cost: 400 SGC 100 units produced, pre-production version Yes that is a P90 mag if you are wondering, and the stock is collapsible/detachable.