The M3 Carbine is a select-fire version of the M1 Carbine service rifle.
It is chambered in .30-06 Springfield and was used briefly in the Vietnam War.
The 'burbs[]
Lt. Mark Rumsfield (Bruce Dern) is seen carrying an M3 Carbine fitted with a foregrip and infrared scope which Rumsfield claims was used by snipers for nightvision. When he falls off the roof, the carbine hits the ground and goes off, blowing out a car window