The Glock 17 is carried by most of the CSIs throughout season 7. Both Detective Mac Taylor (Gary Sinise) and Detective Danny Messer (Carmine Giovinazzo) use Glock 17s. Also, any NYPD officer (unless otherwise indicated on this page) seen with a pistol is also using a Glock 17. During the opening credits, Danny can be seen with his Glock 17 in hand.
In "Sangre por Sangre" (S07E04), Hazel Ortega (Lymari Nadal) holds an NYPD officer at gunpoint with the officers Glock 17.
In "Smooth Criminal" (S07E14), "The Handsome Man" (Ne-Yo) uses a Glock 17 to murder three people in a nightclub. Lindsay is later seen with that Glock 17 which she process from the crime seen.
Glock 26
The Glock 26 is the sidearm of both Detective Lindsay Monroe Messer (Anna Belknap) and the new member of the team, CSI Jo Danville (Sela Ward).
In "Justified" (S07E09), Mitch Barrett (Mo Gallini) fires a Beretta 3032 Tomcat through a door at Flack & Danny. Lindsay is later seen processing the weapon.
Beretta 8045 Cougar
In "Party Down" (S07E13), Carmen Enzo (Paul Ben-Victor) uses a stainless Beretta 8045 Cougar to kill the man that murdered his daughter.
Beretta 92SB
In "Smooth Criminal" (S07E14), a criminal is seen firing at NYPD officers with what appears to be a Beretta 92SB (noted by the rounded trigger guard).
Beretta 92FS
In "Hide Sight" (S07E07), Tom Reynolds (Mark L. Young) uses a Beretta 92FS when the NYPD closes in on him.
In "Nothing for Something" (S07E20), Raymond Harris (Clifton Collins Jr.) retrieves a Beretta 92FS from a hole in a wall.
Colt Mustang
In "Unfriendly Chat" (S07E02), Christopher Garcia (Ricardo Molina) is seen with a Colt Mustang when he tries to kill Adam.
In "Exit Strategy" (S07E22), an Colt MK IV Series 80 is used by a store owner to defend himself against Kenny Hexton (Michael Irby). The gun is later seen being processed by Lindsay. It appears to have the larger trigger of the M1911 but the shorter hammer of the M1911A1.
In "Nothing for Something" (S07E20), Raymond Harris (Clifton Collins Jr.) retrieves a Springfield Armory Professional 1911 from a hole in the wall.
SIG-Sauer P226
In "To What End" (S07E11), Bobby Renton (JD Pardo) uses a SIG-Sauer P226.
In "Smooth Criminal" (S07E14), a criminal is seen firing at NYPD officers with a SIG-Sauer P226.
In "The 34th Floor" (S07E01), Theodore Westwick (Brett Tucker) pulls a Walther PPK/S on NYPD officers.
In "Vigilante" (S07E15), Annie Cartland (Megan Ward) uses what appears to be a Walther PPK/S to kill a rapist.
Revolvers
Smith & Wesson Model 10
In "Exit Strategy" (S07E22), Kenny Hexton (Michael Irby) uses a snub nosed Smith & Wesson Model 10 during a robbery. The gun is later seen in a confrontation between Hexton and his accomplice Wes Dillon (Clayne Crawford). At the end of the episode, Olivia Dalton confronts Mac with the gun.
Throughout the season, Smith & Wesson Model 36 revolver is seen in the credits.
In "Nothing for Something" (S07E20), Mac's old partner William Hunt (Peter Fonda) uses a nickel plated Smith & Wesson Model 36 revolver to 'rough up' Raymond Harris (Clifton Collins Jr.). In the following episode, "Life Sentence" (S07E21), Mac uses Hunt's gun to kill Harris in the final shoot out. At one point Harris describes the gun as a "Snub-nosed 38, nickle plated, mother of pearl handle."
In "Out of the Sky" (S07E05), jewel thieves are seen carrying Heckler & Koch MP5A3s. Dr. Sheldon Hawkes (Hill Harper) is later seen test firing the weapon in the lab. (Note that the guns are fitted with collapsible stocks and Navy trigger groups. I wasn't able to get an un-blurred picture).
In "Hide Sight" (S07E07), NYPD officers are seen with Heckler & Koch MP5A3s.
Heckler & Koch MP5K
In "Smooth Criminal" (S07E14), a criminal is seen firing at NYPD officers with a Heckler & Koch MP5K fitted with a PDW folding stock.
MAC-10
In "Sangre por Sangre" (S07E04), a member of the "Los Puños" ambushes Flack with a MAC-10.
In "Life Sentence" (S07E21), Raymond Harris (Clifton Collins Jr.) shoots at Mac with a MAC-10.
In "Smooth Criminal" (S07E14), "The Handsome Man" (Ne-Yo) uses a Mossberg 500 Cruiser. In "Life Sentence" (S07E21), Raymond Harris (Clifton Collins Jr.) uses one to shoot at Mac and William Hunt.
Assault Rifles
AKMS
In "Nothing for Something" (S07E20), Raymond Harris (Clifton Collins Jr.) is seen retrieving an AKMS from a hole in the wall. He later uses the gun in "Life Sentence" (S07E21) to shoot up the NYPD crime lab. Detective Danny Messer (Carmine Giovinazzo) is also seen with the gun when he test fires it in the lab.
Colt Model 933
In "The 34th Floor" (S07E01), NYPD ESU officers are seen with Colt Model 933s.
In "Hide Sight" (S07E07), NYPD ESU officers are again seen using Colt Model 933s.
In "Party Down" (S07E13), the Colt Model 933 again makes an appearance in the hands of NYPD ESU officers while searching John Everett's house.
In "Life Sentence" (S07E21), ESU officers again use the Colt Model 933 when clearing the NYPD crime lab.
In "Exit Strategy" (S07E22), ESU officers use the Colt Model 933 a final time when attempting to apprehend Kenny Hexton (Michael Irby).
Colt M4
In "Smooth Criminal" (S07E14), NYPD ESU officers are seen using Colt M4s fitted with railed handguards, vertical grips and Aimpoint red dot sights.
Colt M4A1 Carbine
During the opening credits, an ESU officer is seen with a M4A1 Carbine in a scene from the Season 3 episode "Snow Day".
Unknown AR-15
In "Life Sentence" (S07E21), ESU members are seen with an AR-15 variant when searching for Raymond Harris.
(These appear shorter than the Colt Model 933. Also thought the logo might help identify them.)
This logo looks like the G&G 'Marine Envoy' stamp, as featured on my own airsoft SBR M4, possibly making this an airsoft model
Sniper Rifles
Blaser R93
In "Hide Sight" (S07E07), an NYPD Sniper is seen with a Blaser R93.
Unknown Sniper
In "Hide Sight" (S07E07), Tom Reynolds (Mark L. Young) is seen with an unknown sniper rifle. (NOTE: I have included many images to help identify the rifle, once it has been positively identified, I will remove some of the images.)
I'm thinking its a Sako M995 TRG-S... --Zackmann08 16:06, 21 February 2012 (CST)
The Remington Model 770 is another possibility... --Zackmann08 16:10, 21 February 2012 (CST)
Other
Orion 25mm Flare Gun
A 25mm Orion flare gun is seen on a table in "Identity Crisis" (S07E18).
Unknown Airgun/Flaregun
In "Identity Crisis" (S07E18), Danny is seen testing multiple different guns trying to find a match to one used on a victim. There appear to be 2 air guns and one flare gun.
Gun Collections
Gun Lab
The gun lab is seen in multiple different episodes when the CSIs are test firing guns.
Gun Room
In "Smooth Criminal" (S07E14), "The Handsome Man" (Ne-Yo) has a room full of guns.