Sheriff Ed Tom Bell (Tommy Lee Jones) carries a Colt Series 70 Combat Government Model. This was the only model in that time frame that would have had black grips with the gold medallions, and combat style hammer. The Series 70 Combat Government Model was the forerunner to the Combat Elite. It is notable that in the novel, Bell remarks in an internal monologue that he still likes "the old Colt's .44/40" and that if that fails to stop an attacker the best one can do is throw the gun and run. Later in the book he draws, but does not fire, a single action revolver presumably loaded with tried and true .44/40s.
Error creating thumbnail: File missingSmith & Wesson Model 13 with 4-inch barrel - .357 MagnumError creating thumbnail: File missingDeputy Wendell: We going in? Sheriff Ed Tom Bell: Gun out and up. Deputy Wendell: What about yours? Sheriff Ed Tom Bell: I'm hiding behind you. Deputy Wendell brandishing the S&W Model 13 before entering Moss's Trailer.Error creating thumbnail: File missingDeputy Wendell with his S&W Model 13 as he checks the rest of the trailer.
Glock 19
When Anton Chigurh first goes to the trucks with the "mind riding bitch" guy, he executes both him and his partner with what appears to be a Glock 19 pistol. A Glock would be an anachronism as they were not produced until 1983.
A Heckler & Koch SP89 is picked up by Llewelyn Moss at the scene of a drug exchange gone wrong. If this film takes place in 1980, then the SP89 is anachronistic, since the gun was not manufactured until 1989.
In the motel a drug dealer is seen using a Cobray M11/9. As with other guns depicted (e.g. the SP89 and 11-87), the M11/9 is an anachronism for the film's date of 1980, as it was first manufactured in 1983.
Several Norinco Type 56 copies of the AK-47 assault rifle (both the fixed stock Type 56 and folding stock Type 56-1) can be seen on the ground next to dead drug dealers at the site of the failed exchange.
Llewelyn Moss (Josh Brolin) uses a Remington 700 when hunting a Pronghorn.
According to the novel [1], the rifle Llewelyn uses to hunt Pronghorn is a "heavy barreled .270 on a '98 Mauser action with a laminated stock of maple and walnut. It carried a Unertl telescopic sight of the same power as the binoculars [10x]". This description closely matches the Parker Hale 1200 series rifles [2], although the movie prop is a Remington 700 variant, based on the appearance of the action and the placement of the safety.
The stock appears to be that of a 700VLS and the rifle is most likely chambered for .243 Winchester or 308 Winchester, though for pronghorn a .223 Remington or .22-250 Remington could work. The 700VLS is anachronistic, as it was first produced in 1995.
Llewelyn Moss (Josh Brolin) uses a 12 gauge Winchester Model 1897 sawn off pump for a large part of the film, and uses it to wound Anton. Winchester no longer makes this model, and those still in circulation are considered collector's items. The actual firearm used in the film was a clone of the Winchester 1897 made by Norinco. In the DVD special features, the armorer mentions that the fact that in the book it says that Moss cocks the hammer on the shotgun, clued him into the fact that it was a Winchester Model 1897.
Anton Chigurh (Javier Bardem) uses a sound-suppressed Remington Model 11-87 Semi-Auto shotgun with a sawed off barrel in four shooting scenes in the movie.
(As with the TEC-9, this is also anachronistic because the Remington 11-87 was not designed until 1987 and the film takes place in 1980.)
Remington 11-87 shotgun edited to resemble gun in film - 12 gauge.Error creating thumbnail: File missingPromo image of Chigurh with his suppressed Remington 11-87.Error creating thumbnail: File missingChigurh aims his Remington 11-87 at the Mexican lying on the bed reaching for his MAC-10.Error creating thumbnail: File missingChigurh aims his Remington 11-87 at the closet.Error creating thumbnail: File missingChigurh fires his Remington 11-87, note how the supposed "suppressor" does little to dampen the muzzle flash; most likely it is just a silver cylinder slipped over the barrel and let the sound editors take care of the rest. It's also worth noting how Javier Bardem does a good job of keeping his eyes open, despite the massive muzzle flare in a dark, enclosed space.Error creating thumbnail: File missingChigurh fires at the Mexican in the bathroom.Error creating thumbnail: File missingChigurh aims his Remington 11-87 at the last man hiding in the bathtub. Note 11-87 on the receiver.
Other
Captive Bolt Pistol
Chigurh seems to prefer to use a Captive Bolt Pistol on his victims when he can. He also uses it to blow out door locks. The Captive Bolt Pistol is a pneumatic gun that fires a bolt into the brains of cattle to stun them before slaughter. Like the name suggests the bolt never entirely leaves the gun, it is shot out by air (or a blank) and then retracts back into the gun by return springs. Though not a "firearm" it is a gun and does play a big role in several scenes. Anton most likely chose this weapon because it requires no ammunition, is almost completely silent, and leaves no physical evidence (bullets and/or empty casings).