Colt MARS

The Colt MARS (mini-assault rifle system) was an experimental, scaled-down variant of the M16 rifle tested by Colt as a personal defense weapon (PDW) around 1997. It was chambered for the experimental 5.56×30mm MARS cartridge which is a shortened 5.56×45mm NATO round. The 5.56×30mm cartridge fired a 55-grain (3.6 g) projectile at 790 m/s (2,591.9 ft/s). The rifle was patented in 1998.

Colt MARS
TypePersonal defense weapon
Place of originUnited States
Production history
DesignerColt
Designed1997
ManufacturerColt
No. built3
Specifications
Barrel length10.5 in (270 mm)

Cartridge5.56×30mm MARS
9x30mm MARS
ActionGas-actuated, rotating bolt
Muzzle velocity790 m/s (2,592 ft/s)
Effective firing range300 meters
Feed system30-round box magazine
Sights1.5x optical sight
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