Colt 6520 10mm pistol appears in Fallout and Fallout 2, Creation Club and is mentioned in Nuclear Winter. Another product, the Colt Rangemaster hunting rifle, appears in Fallout, Fallout 2 and Fallout Tactics. The .45 Auto pistol in Honest Hearts was modeled after the 1911 Colt model. The Colt 45 appears in Fallout Tactics and was set to appear in the canceled Fallout Extreme. The Colt 6504 9mm autoloader was to appear in Van Buren.
- The real-life Colt's Manufacturing Company on Wikipedia