Can anyone identify what type?

More info:
U.S. Customs and Border Protection (CBP) officers performing southbound inspections at the Andrade border crossing Saturday stopped a driver with two machine guns strapped to the engine of his pickup truck.
The stop occurred at about 10:30 a.m. Saturday as CBP officers were inspecting vehicles heading southbound into Mexico. A pickup driven by a 20-year old man from El Mirage , Arizona , a U.S. citizen , was referred to secondary inspection. When CBP officers popped the hood they discovered two machine guns and two ammunition containers strapped to the engine. Looking further , officers also discovered ammunition hidden in the spare tire. Officers seized an MG-42, 7.92mm caliber machine gun and an SA43, 7.62X54R mm caliber machine gun plus 680 rounds of ammunition and machine gun ammunition links to make an automated belt for the machine gun ammunition.The man was turned over to the Immigration and Customs Enforcement's Border Enforcement Security Task Force
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