M3 Sub Machine Gun

 This is the M3 Sub machine Gun or in its most common name given, the "Grease Gun". It is called as such because because its appearance really and literally looks like a mechanical grease gun. The M3 is a .45 caliber sub machine gun used and adopted United States Army on 12th of December 1942. As compared to the Thomson Sub Machine Gun, the M3 was cheaper to produce, lighter, more accurate, and was also chambered.  This weapon was intended to replace the .45 caliber Thomson series of Sub Machine Guns. However, the M3 saw relatively little combat use in the World War II because there were delays caused by the production issues and approved specification changes.   The M3 was an automatic air-cooled blow-back-operated weapon. Its body is mostly covered with plain .060-in thick sheet steel. Obviously this was a heavy weapon due to its heavy material composition, however, amazingly, it is much lighter than the Thomson Sub Machine Gun. 

   Since it is no longer being used in war or any other form of combat in today modern warfare, it is but proper therefore that this would be for collection purposes. Besides, i believe, this is a very good collector's item, I would collect one myself if given the chance.

Weight	M3 (empty): 8.15 lb (3.70 kg) M3A1 (empty): 7.95 lb (3.61 kg)
Length	29.8 in (760 mm) stock extended / 22.8 in (579.1 mm) stock collapsed
Barrel length	8 in (203.2 mm)
Cartridge	.45 ACP 9×19mm Parabellum
Action	Blowback, open bolt
Rate of fire	450 rounds/min cyclic
Muzzle velocity	920 ft/s (280 m/s)
Effective range	Sights fixed to 100 yards (91 m)[5]
Feed system	30-round detachable box magazine
Sights	Fixed rear peep sight and blade foresight, calibrated to 100 yards for caliber .45 M1911 ball ammunition