Will the Army get a new Personal Defense Weapon?

For more than a hundred years, U.S. troops have carried either a 1911 (45ACP) pistol or a Beretta 9MM as a personal sidearm. But that may be about to change.
Army Times reports that the army is looking at various small submachine guns chambered in the ever popular 9mm Parabellum cartridge. The Army’s requirement is for a compact, lightweight full-auto weapon with more firepower than a pistol to combat the type of unconventional warfare our troops face in the 21st century.
Guns currently being reviewed are:

Beretta USA Corporation PMX subcompact weapon.

Colt’s Manufacturing Company LLC for CM9MM-9H-M5A, Colt Modular 9mm subcompact weapon.

CMMG Inc. for Ultra PDW subcompact weapon.
CZ-USA for Scorpion EVO 3 A1 submachine gun.

Lewis Machine & Tool Company for MARS-L9 compact suppressed weapon.

PTR Industries Inc. for PTR 9CS subcompact weapon.

Quarter Circle 10 LLC 5.5 CLT and 5.5 QV5 subcompact weapons.

Sig Sauer Inc. for MPX subcompact weapon.

Trident Rifles LLC for B&T MP9 machine gun.

Zenith Firearms for Z-5RS, Z-5P and Z-5K subcompact weapons.

The concept of small, compact semi- and full auto pistol caliber guns is not new. Mitchell Werbell and his Sionics Corporation developed the MAC10 subgun for use in the Vietnam war, but the Pentagon never really took to the idea.

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