With an impressive 40-round magazine capacity, light recoil, and great penetration at close distances, the CMMG® FourSix™ is here to reimagine the Personal Defense Weapon. Not only is the FourSix the first AR chambered in 4.6x30mm, but it is also the first 4.6x30mm firearm ever released to the U.S. civilian market!
The Below Information Has Been Provided From Our Gun Caliber Dictionary And Is Meant For Informational Purposes Only. It Is Not Intended to Describe The Unique Specifications For This Ammunition.
Introduced by Heckler & Koch in 1999, the 4.6x30mm Heckler & Koch (H&K) is a military and law enforcement cartridge designed for the H&K MP7 Personal Defense Weapon (PDW), which has been its primary platform. The 4.6x30 is a bottle-necked cartridge using light .183-inch bullets from 26 to 42 grains at moderate velocity (2000 to 2400 feet per second). The light bullets and small caliber are intended to reduce muzzle rise during rapid fire, provide better penetration on body armor, and allow a larger combat load because of lighter ammunition. The 4.6x30 H&K was designed to compete with FN's 5.7x28mm cartridge. Results have been inconclusive and neither cartridge has been standardized by NATO. — Craig Boddington
