Justified

SIG-Sauer P226

During season 1 episode 1 "Fire in the Hole", Raylan Givens (Timothy Olyphant) uses a 9mm SIG P226 to shoot a suspect in Miami when he refuses to surrender and tries to shoot Raylan with a gun he had hidden underneath the table. Later in the episode Chief Deputy Art Mullen (Nick Searcy)uses a SIG P226 during the gunfight against Crowder's two "fat" Neo Nazi thugs.

A factory black (K-Kote) SIG-Sauer P226 pistol chambered in 9x19mm. This is a real movie gun and has appeared in several motion pictures.

Glock 17

Duing season 1 episode 1 "Fire in the Hole" Boyd Crowder (Walton Goggins) uses a Glock 17 to dispatch a suspected rat in his crew. Later in the episode a couple of Glock 17s can be seen in the trunk of Chief Mullen's SUV, when he reaches to collect some weapons and ammo to confront Crowder's two "fat" Neo Nazi thugs.

A Generation 3 Glock 17 9x19mm. Note the finger grooves, thumb reliefs, and accessory rail on the frame, which differentiate it from the older model.

Glock 19

During the beginning scene in season 1 episode 1 "Fire in the Hole" the fugitive that Raylan shoots dead in Miami tried to use his Glock 19 hidden underneath the table, but never uses it due to the fact that Raylan drew his weapon faster then him.

Glock 19 (2nd Generation) - 9x19mm

Colt 1911A1

Near the end of episode 1 "Fire in the Hole" Boyd Crowder (Walton Goggins) is seen armed with a nickel plated Colt 1911A1, and almost uses it to shoot his sister-in-law untill Raylan shoots him.

Ruger Mini-14

During season 1 episode 1 "Fire in the Hole" one of two of Crowder's Neo Nazi "fat" thugs uses a Ruger Mini-14 GB-F. First using it in a bank robbery then later using the Mini-14 to pin down Raylan's team.

Stainless Steel Ruger Mini-14 GB-F ("Government Barrel, Folding Stock") - 5.56x45mm

AKM

During season 1 episode 1 "Fire in the Hole" one of two of Crowder's Neo Nazi "fat" thugs uses an AKM first during a bank robbery then uses it to pin down Raylan's team alongside his brother.

AKM, Stamped Steel Receiver w/ slant muzzle brake 7.62x39mm

Mossberg 500 Cruiser

During season 1 episode 1 "Fire in the Hole", one of Boyd Crowder's Neo Nazi thugs Dewey Crowe (Damon Herriman) tries to intimadate Raylan by loading a Mossberge 500 Cruiser with pistol grip, vertical foregrip, and has a saddle shell holder attached to the left side of the shotgun's receiver. Dewey loads two rounds in the shotgun but forgets to rack in a load, in which Raylan calls himout and says "Can you rack in a load before I put a hole through it?" Later in the episode Raylan Givens (Timothy Olyphant) takes Dewey's shotgun and fires one round to command Dewey and another of Crowder's Neo Nazis to handcuff themselves together before going off to confront Crowder.

A production still of Raylan Givens (Timothy Olyphant) seen with the Mossberge 500 Cruiser with pistol grip and vertical foregrip

Mossberg 500 Cruiser with plain barrel, no heat shield - 12 gauge

M72 LAW

An M72 LAW is used by Boyd Crowder (Walton Goggins) to blow up a church in SE1 EP1 "Fire in the Hole".

M72A2 LAW - 66mm

Unknown AR-15 sniper rifle

One of Given's fellow Marshals use an unknown AR-15 sniper rifle configuration with Aimpoint M68 Sight and a rear night vision scope in Season 1 episode 1 "Fie in the Hole".