M6 pistol (Earth-5875)

The M6 pistol is a family of semi-automatic handguns chambered for 12.7×40mm projectile ammunition developed by the Armat Battlefield Systems. The M6 has multiple models, and is a successor to the older M4 family, which are themselves an updated version of the Colt M1911 pistol designed by John Browning in 1911.

Design details
The M6 series weapons are recoil-operated and magazine-fed, and typically fire 12.7×40mm projectile ammunition, and despite the large caliber, oftentimes "exotic" ammunition is not utilized. They are also remarkably large and overpowered to an extent, appearing to be redolent of a cross between a pistol and a rifle in size. In addition to power, the M6 line of weaponry is designed to be exceedingly rugged and reliable, and the guns are able to remain operational after slipspace transitions and high-g aerial maneuvers, as well as the rigors sustained during standard combat. However, the heavy weight limits its distribution amongst personnel, and the M6 weapons have a tendency to drop casings on the wielder's foot, leading some UNSC personnel to favor the M7 SMG, which operates on a caseless system.

They have remained remarkably unchanged during their decades of service, although there are a large number of variants. The M6 series handguns are issued in three different finishes: hard chrome, black polymer, and electroless nickel. Some variants of the M6 series have been 'up-sized' to approximately 117% their normal size to better facilitate use by SPARTANs.

Models

 * M6C
 * M6C/SOCOM
 * M6D
 * M6G magnum
 * M6H magnum

Source

 * 1