The Glock 17 serves as the standard issue sidearm for the Duluth Police Department. It is carried by Officer Gus Grimly (Colin Hanks) and Duluth SWAT operators. FBI Special Agents Pepper (Jordan Peele) and Budge (Keegan-Michael Key) also carry Glocks as their sidearms.
Beretta 92FS Inox
Lorne Malvo (Billy Bob Thornton) draws a Beretta 92FS Inox and places it on his car seat in anticipation of an ambush. However, when he is rammed by Wrench and Numbers the gun falls out of his reach, forcing him to use a knife to defend himself instead.
Taurus PT911 Stainless
When Lorne Malvo (Billy Bob Thornton) meets Lester Nygaard (Martin Freeman) in Las Vegas in 2007, he uses a suppressed Taurus PT911 to execute Burt Canton (Stephen Root), his wife and his own (albeit cover) fiance to intimidate Lester. He had been befriending Burt for over a year in order to gain access to his brother in witness protection. He later uses the same gun upon returning to Bemidji.
SIG-Sauer P225 Nickel
Lester Nygaard (Martin Freeman) arms himself with a nickel SIG-Sauer P225 with pearl grips to protect himself from Lorne Malvo (Billy Bob Thornton). The gun was inherited from his brother Chazz, who Lester framed for his wifes murder.
Lester Nygaard (Martin Freeman) plants his brothers Smith & Wesson Model 66 snubnose in his nephew Gordo's school bag when he breaks in to frame him for murder.
Purchased by Lester Nygaard (Martin Freeman) prior to the events of the show. It is later used by Lorne Malvo (Billy Bob Thornton) to murder Chief Vern Thurman (Shawn Doyle)
Remington 870 Pistol Grip
Lorne Malvo (Billy Bob Thornton) duct tapes a pistol gripped Remington 870 to the hands of Don Chumph (Glenn Howerton) before staging a shooting to distract the Duluth Police Department. When SWAT officers arrive and see Don taped to an exercise bike with the shotgun, they mistake him for a hostile and shoot him multiple times.
Submachine Guns
Heckler & Koch MP5A3
Duluth SWAT officers carry [Heckler & Koch MP5A3]]'s when responding to the rigged house set up by Lorne Malvo (Billy Bob Thornton).
Chazz Nygaard (Joshua Close) illegally owns an M249 SAW that he purchased from a friends who works in the Minnesota National Guard base Camp Ripley. He stores it in a secret compartment in his gun safe which Lester hides evidence to frame him for Pearls murder.