Firearms
The primary handgun for Marshals is the Glock 22 or Glock 23 in .40 S&W caliber, and each deputy may carry a backup handgun of their choice if it meets certain requirements. Members of the US Marshal SOG Teams are armed with M1911A1 Springfield TRP Pistol (.45 ACP). Marshals are also equipped with AR-15s and 12-gauge shotguns.
Read more about this topic: United States Marshals Service