This is a factory prototype of the Colt's entry into the Offensive Handgun Weapon System as requested by US SOCOM in the early 1990s. It featured a rotating barrel locking system, double action trigger system (with manual safety and decocker), and single stack 10-round magazine. Only about 30 were ever made, as military testing resulted in the H&K USP being chosen for further refinement instead of the Colt design.