In the pilot episode, this gun is in drug dealer, Krazy 8's possession. Not long after, Walt becomes its new owner before Jesse disposes of it in the following episode.
M1911A1
Used by a few characters throughout the series, most noticeably by the 'Cousins' in season three. The Cousin's 1911s are nickel-plated.
Jericho 941
Tuco Salamanca (Raymond Cruz) uses a Jericho 941 with a two-tone finish as his sidearm. In Episode 2x02, "Grilled", Jesse takes it from him while they are fighting on the ground and uses it to wound him. It is later buried in the desert in the following episode.
Glock 22
Hank Schrader shows off his issue Glock 22 during the party in the first episode. He actually refers to it as a Glock 22 and praises the power of the .40-caliber round over 9x19mm (claiming to have seen the latter cartridge ricochet off a car windshield). He uses the Glock 22 in his shootout with Tuco in the episode "Grilled" of season two. It can be seen occasionally throughout season two and three.
Ruger SP101
This is the revolver purchased by Jesse. He uses it to intimidate an unnamed female junkie and her husband, Spooge after they rip-off one of Jesse's dealers.
Ruger KGP-161
Emilio's gun. Taken out of the yellow bag by Walter in S01E02 and later dissolved in the tub.
Ruger LCR
Walter White purchases a Ruger LCR from an illegal arms dealer (Played by Jim Beaver) along with a leather I.W.B. holster in S4E2 "Thirty-Eight Snub". The arms dealer recommends he load it with 158 grain hollow points for good stopping power, and also recommends he not cross draw unless he is sitting down.
Smith & Wesson M945
A Smith & Wesson 945 is used by rival drug dealer and by Walt to shoot the dealer after running him over.
Beretta 84F Cheetah
Jesse buys and plans to use a Beretta 84F Cheetah to take revenge on drug dealers who killed his friend, but he never fires it as Walt intervenes with his car. He later uses it to kill Gale.
Taurus PT92AFS
Jesse & Mike pick up Taurus PT92AFS pistols from dead men and use them when escaping Don Eladio's compound, Jesse empties his into a cartel member who wounds Mike.
Heckler & Koch Mark 23
A Heckler & Koch Mark 23 is used with a suppressor by Mike (Jonathan Banks) in Episode 3x03, "Full Measures". The suppressor he uses is a fake "Hollywood suppressor" which screws into the barrel of the pistol (via the threading for the blank adapter), rather than onto the exterior threading. Mike uses the Mark 23 again in Episode 4x04, "Bullet Points" to take out a pair of Ciudad Juárez cartel gunmen who ambush a refrigerated truck transporting methamphetamine (though he uses it without the suppressor in this episode).
--Flexo 09:26, 22 January 2012 (CST)==Taurus Model 85==
Submachine Guns
Heckler & Koch MP5K
In Episode 4x04, "Bullet Points", a refrigerated truck guarded by Mike (Jonathan Banks) is ambushed and then shot up by two Ciudad Juárez cartel enforcers, both of whom are armed with Heckler & Koch MP5Ks.
Assault Rifles
M4A1 Carbine
An M4A1 Carbine is used by Tuco (sometimes with an ACOG scope) in Episode 2x02, "Grilled", when he takes Walt and Jesse hostage. Walt later takes this weapon from him when Tuco is bashed over the head with a rock by Jesse. However, Tuco gets it out of the car when DEA agent Hank, who is also Walt's brother-in-law, arrives at Tuco's hideout. DEA agents also use M4A1s when they arrest Jesse in 'Bit By a Dead Bee'. The M4A1 appears again in Episode 4x06, "Cornered" in the hands of one of Gustavo Fring's (Giancarlo Esposito's) gunmen riding in the back of the refrigerated truck.
Colt Model 933
The other of the two mercenaries guarding the refrigerated truck in Episode 4x06, "Cornered" is armed with a Colt Model 933, the shorter-barreled version of the M4A1 carried by his accomplice.
Shotguns
Mossberg 500
Clovis, a tow truck and junkyard owner who is a cousin of an associate of Jesse's, uses a shortened Mossberg 500 to threaten an intruder sleeping in Jesse's RV, but put up his gun when the intruder turns out to be Jesse himself (S2E4, "Down"). Specifically, the weapon appears to be a cut down 500AT; the stock has either been shortened to, or replaced with, a pistol grip, but the barrel appears to be original as it has the original bead sight (thereby narrowly escaping being a "short-barreled shotgun" for purposes of the 1934 National Firearms Act).
Mossberg 500 Mariner
An Mossberg 500 Mariner is used by a police officer before he is axed by one of the Cousins.
Non Guns
Non Descript Pocket Pistol non gun
"Negro Y Azul" Weapons
A music video appears in the Season 2 episode "Negro Y Azul" (Spanish for black and blue). A multitude of weapons appear in the video. All of the guns which appear in this video are clearly airsoft weapons, as opposed to the blank-adapted real firearms used elsewhere on the show.
Unknown Revolver
An unknown Smith & Wesson model revolver can be seen in the "Negro Y Azul" music video. It is sitting next to several bags of the Walt's signature blue meth. It appears to be a Smith & Wesson Model 686 .357 Magnum.