Deputy US Marshal Raylan Givens (Timothy Olyphant) continues to carry a Glock 21 as his sidearm in Season 2.
Glock 17
Nearly all of the other US Marshals in the series carry full size Glocks as their sidearms as well including Chief Deputy Art Mullen (Nick Searcy) and Deputy Marshal Tim Gutterson (Jacob Pitts). In some episodes, the Glock seen carried by Deputy US Marshal Raylan Givens (Timothy Olyphant) appears to be a Glock 17.
Glock 26
The Glock 26 appears mainly in the series as the sidearm carried by Deputy Marshal Rachel Brooks (Erica Tazel). The Glock 26 also is Raylan's backup weapon and is seen using it in "Brother's Keeper" (S2E09). Raylan's ex Winona (Natalie Zea) is given Raylan's Glock 26 to defend herself from hitmen in "Debts and Accounts" (S2E10).
In "Full Commitment" (S2E11), a Browning Hi-Power is used by one of Dickie Bennett's men to take target practice.
Colt 1911A1 (Nickel)
A nickel plated Colt M1911A1 is seen in the hands of a hitman in Debts and Accounts (S2E10) and one of Dickie's men in "Full Commitment" (S2E11).
Colt Commander
A nickel Colt Commander is the pistol carried by Dickie Bennett.
Colt Government Model
In Season 2's premiere "The Moonshine War" (S2E01), a Colt Government is pulled on a truck driver by Miami cartel soldier Pilar. The handgun is later seen in the hands of Boyd Crowder. Another Government pistol appears to be the sidearm of Frank Reasoner (Scott Wilson) in "Blaze of Glory" (S2E06).
Heckler & Koch USP Compact
A suspect dual-wields a Heckler & Koch USP Compact along with a Beretta in a waiting room in "The Life Inside" (S3E02).
SIG-Sauer P229R
In "For Blood or Money" (S2E04), a SIG-Sauer P229R is used by Clinton (Larenz Tate) throughout the episode.
SIG-Sauer P226R
In "Full Commitment" (S2E11), Jed Berwin (Richard Speight, Jr.) uses a SIG-Sauer P226R fitted with a threaded barrel during target practice.
Walther PPK
A Walther PPK is used to threaten Loretta McCready (Kaitlyn Dever) in "The Moonshine War" (S2E01).
Revolvers
Colt Python
In "The I of the Storm" (S2E03), Doyle Bennett (Joseph Lyle Taylor) is seen carrying a Colt Python as his sidearm. He then pulls the Python on some suspects.
Smith & Wesson Model 686
A Smith & Wesson Model 686 is seen pulled on the bus in "The I of the Storm" (S2E03). It's also seen used in the shootout with Raylan in the episode.
Smith & Wesson Model 10
A Smith & Wesson Model 10 is held by Coover Bennett (Brad William Henke) in "The Moonshine War" (S2E01). The revolver then is seen pulled by Dewey Crowe while impersonating Raylan in "The I of the Storm" (S2E03). Mags Bennett (Margo Martindale) also is seen with a S&W.
Smith & Wesson Model 29
In "Cottonmouth" (S2E05), Shelby (Jim Beaver) is seen pulling what appears to be Smith & Wesson Model 29 as Boyd earlier referred to as a ".44 that Shelby keeps underneath his desk".
AKM rifles are seen throughout Season 2. In Season 2's premiere "The Moonshine War" (S2E01), a cartel gunman is briefly seen opening fire with the AKM from a private jet. The AK rifle is also seen in the hands of some of Mags Bennett's men.
AKMS
AKMS rifles are used by some of Dickie Bennett's men in "Bloody Harlan" (S2E13).
Colt Model 733
Rachel Brooks is armed with a Colt Model 733 in "Bloody Harlan" (S2E13).
Colt M4A1
One of Mags Bennett's men is seen carrying a tan-painted M4A1, notably in "Full Commitment" (S2E11) and in "Bloody Harlan" (S2E13).
Tim Gutterson (Jacob Pitts) is seen using a scoped M4A1 in "Bloody Harlan".
Ruger Mini-14
A scoped Ruger Mini-14 is seen used in the bus hijacking in "The I of the Storm" (S2E03). Another scoped Ruger Mini-14 is seen used by Devil (Kevin Rankin) in "Bloody Harlan" (S2E13).
Steyr SSG 69
When a sniper opens fire on the Givens' home in "The Spoil" (S2E08), Arlo Givens (Raymond J. Barry) is seen holding a long rifle which resembles a Steyr SSG 69. Since Arlo is not seen firing the weapon, this rifle is more likely an airsoft replica.
Winchester Model 70
Raylan finds a Winchester Model 70 in the back of an abandoned car in "Save My Love" (S2E07). A sniper uses a Winchester Model 70 to open fire on the Givens' home in "The Spoil" (S2E08).
Shotguns
Remington 870 (Express)
Ava Crowder (Joelle Carter) is seen using a Remington 870 Express that she keeps in her home throughout Season 2. A masked Arlo also is seen holding a Remington 870 during a hijacking in (S2E11).
Remington 870 (Police)
Raylan is seen taking out from the trunk of his car a Remington 870 Police shotgun with black furniture after hitmen making an attempt on his and Winona's life in "Debts and Accounts" (S2E10).