Inspired by the lack of stopping power offered by the 5.56 NATO cartridge used in the M4 and the M16, the .458 SOCOM came about from informal discussion of members of the Special Forces community, specifically Delta Force's experience that multiple shots were required to neutralize members of the opposing force in Mogadishu during Operation Gothic Serpent. Marty ter Weeme, founder of Teppo Jutsu LLC, went to work to develop a new cartridge that would deliver far more energy from short barrels at relatively short distances.
The .458 receiver is offered by several companies for civilian purchase.