FBI Special Agent Seeley Booth (David Boreanaz) carries a Glock 17 as his sidearm for the first two seasons. For a few episodes, starting with Season 1's "The Man On The Fairway", Booth's Glock is shown with a stainless slide.
In Season 4's "The Man in the Outhouse" (S4E03), a Glock 23 is taken as evidence. It is said to be .40 caliber, which combined with its compact size, narrow it down as a G23.
A compact pistol is used by a man to kill his dwarf brother in Season 5's "The Dwarf in the Dirt" (S5E07). It's identified as a Ruger MkIII, but upon closer inspection, appears to be molded off a Beretta 950 Jetfire.
In Season 5's premiere "Harbingers in the Fountain", what appears to be a Colt MK IV Series 80 Enhanced Commander is given to Booth by Sweets when Booth got reinstated into the FBI.
The SIG-Sauer P229 is carried by several FBI agents in the series. In Season 1's "Two Bodies in the Lab", Special Agent James Kenton (Adam Baldwin) carries the SIG and it's also handled by Brennan in the episode.
In Season 4's "The Con Man in the Meth Lab" (S4E09), Brennan takes a Smith & Wesson SW1911PD Tactical Rail Series out of Booth's holster. It has a tactical rail on the frame nose.
In Season 5's "The Bond in the Boot" (S5E2), a suppressed Walther PPK is used by a CIA field operative to kill a Russian diamond courier. Also used by agent Booth in London.
In Season 2's "The Man in the Cell" (S2E12), Dr. Temperance "Bones" Brennan (Emily Deschanel) begins carrying a 4" Smith & Wesson Model 500 that she claims to have bought at the mall. The impracticality of the large-caliber gun for the purposes of law enforcement becomes a running gag in the series. She and Booth both use the weapon in the final showdown with a murderer in Season 3's "Mummy in the Maze" (S3E05). The killer mentions in the episode that the .500 caliber 500 only holds 5 shots, and Booth takes advantage of its power to shoot through a metal door.
In the pilot episode, Dr. Temperance "Bones" Brennan (Emily Deschanel) uses what appears to be a Smith & Wesson Model 625 at an indoor shooting range and what may be the Non Guns model is used to wound a suspect in the leg.
In the initial episodes of Season 1, Booth carries a Smith & Wesson Model 686 as his sidearm. In Season 4's "The Con Man in the Meth Lab" (S4E09), Sheriff Leonard Wilkinson (Brian Howe) appears to use this revolver to hold a woman hostage.
In Season 6's "The Sin in the Sisterhood" (S6E12), a farmer is shown to possess an early snub-nosed Smith & Wesson Model 10 for protection. Camille Saroyan (Tamara Taylor) is later seen shooting it (to "relive stress") into ballistic gel.
In Season 6's "The Body and the Bounty", a bounty hunter is seen using a Mossberg 590 Cruiser to fire beanbag rounds. Brennan is also seen holding the Mossberg.
A Remington 870 Police model with a dedicated forend weaponlight is carried by Booth when he accompanies an FBI SWAT team in Season 3's "The Pain in the Heart" (S3E15).
In Season 3's "Mummy in the Maze", the murderer dressed as a clown uses a sawed-off 12 Gauge Double Barreled Shotgun in a shootout with Booth. Booth mentions how a military man can miss with a scattergun.
Error creating thumbnail: File missingThe weapon in the episode was sawn down to the semi-pistol grip portion of the stock with the barrels left relatively long, similar to this weapon - 12 gauge.Error creating thumbnail: File missingIn Season 3's "Mummy in the Maze", the murderer dressed as a clown uses a sawn-off double barrel shotgun in a shootout with Booth.
Double Barrel Shotgun
In Season 5's "The X in the File" (S5E11), a female rancher holds a 12 Gauge Double Barreled Shotgun loaded with rock salt to shoo people off her land.
The M4A1 is seen carried by US Army troops in Season 1's "The Soldier on the Grave" (S1E21). FBI SWAT is seen armed with the M4A1 in Season 3's "The Pain in the Heart". Booth is seen carrying and firing an M4A1 with a Laser aiming module, weaponlight and foregrip in Afghanistan in Season 6's " "The Mastodon in the Room" (S6E01).
An U.S Army honor guard is shown with M1 Garand rifles in both Season 1's "The Soldier on the Grave" (S1E21) and when Booth is seen as part of another honor guard.
In Season 4's "The Princess & The Pear", a Winchester Model 1892 is seen hanging on Booth's mantle in his apartment.
Error creating thumbnail: File missingThe Winchester 1892 Saddle Ring Carbine with large lever loop used by John Wayne in the film True Grit. Serial #501892. Pictured with .44-40 shells. (Source: Photocopied from book "The Peacemakers: Arms and Adventure in the American West" written by R.L. Wilson.)Error creating thumbnail: File missingIn Season 4's "The Princess & The Pear", a Winchester Model 1892 is seen hanging on Booth's mantle in his apartment.
In Season 6's "The Bullet in the Brain" (S6E11), Agent Booth & Dr. Brennan find a Remington 700P LTR sniper rifle that is suspected to be the murder weapon used to take the head off the serial killer known as "the Gravedigger" (Deirdre Lovejoy). It was stated earlier in the episode that the caliber of the bullet was a .338 Lapua Magnum. Also in Season 6's "The Killer in the Crosshairs" (S6E21), Booth uses his own Model 700 that he kept in his car to shoot Broadsky's rifle in order to prevent the death of a dirty cop.
In Season 5's "The Boy With The Answer", Max Keenan (Ryan O'Neal) uses what appears to be a Winchester Model 70 in an attempt to murder Heather Taffet (the Gravedigger).
Booth and FBI HRT agents are armed with the Heckler & Koch MP5A2 with SureFire dedicated forend weaponlights when raiding a hideout in Season 1's "The Woman in the Car".
In Season 4's "The Man in the Meth Lab" (S4E09), a police instructor shows recruits how to use a stand alone M203 grenade launcher, which he fires into a broken down trailer. A body then erupts from the explosion and the episode's case begins.
