Colt Monitor: The First Official FBI Fighting Rifle
The Colt Monitor, officially the R80, was a 1931 development of the BAR tailored for law enforcement. Modifications included removing military features, shortening the barrel to 18 inches, and adding a pistol grip and Cutt's Compensator for recoil management with the .30-06 cartridge. Its high cost limited adoption, with the FBI acquiring around 90 units.









