If memory serves right MARSOC already adopted 1911 pattern handguns or their sidearm. I hear Green Berets, and Delta use them as well, as well as other members of the Special Operations community. There are already several qualified experts that can train people on the 1911 platform should somebody decide to bring it back.
Such a thing was already done with the M-14, they were brought back as Designated Marksman Rifles and also used in the past in sniper rifle form as the M-21.
anybody here tried out a rifle in .300 Blackout? That looks pretty cool.