In "F-T-F" (S09E11), a Beretta 21A Bobcat is found at a crime scene and identified as the murder weapon. Calleigh specifies that it is a "25".
Beretta 92FS
In "Manhunt" (S09E04), Memmo Fierro (Robert LaSardo) is seen with a Beretta 92FS that he takes from a Hospital Guard.
In "Mayday" (S09E22), Randy North (Ethan Embry) uses a Beretta 92FS to shoot Horatio.
CSI Walter Simons (Omar Benson Miller) uses a Glock 17 as his sidearm during Season 9.
In "Sleepless in Miami" (S09E05), Peter Truitt (Stephen Amell) aims a Glock 17 at Horatio and Eric.
In "Last Stand" (S09E13), Memmo Fierro (Robert LaSardo) is seen with a Glock 17 before being arrested by Horatio.
In "Special Delivery" (S09E17), Marcos Trejo (Raymond Cruz) is seen with a Glock 17 when being detained by the MDPD.
In "G.O." (S09E21), Neal Marshall (Joshua Malina) is seen with a Glock 17 when being confronted by the police.
Glock 26
Throughout Season 9, Natalia Boa Vista (Eva La Rue) uses a Glock 26.
In "Blood Lust" (S09E15), Dennis Baldwin (Jeff Branson) take's Boa Vistas Glock 26 and uses it to hold her hostage.
Heckler & Koch USP
In "Mayday" (S09E22), a flight crewman is seen with a Heckler & Koch USP that he aims at Horatio while trying to hijack the plane that was transporting Jack Toller.
SIG-Sauer P226
Det. Frank Tripp (Rex Linn) uses a SIG-Sauer P226 as his duty weapon during Season 9.
In "Last Stand" (S09E13), during the drive-by shooting at the start of the episode, Sgt. Jennifer Swanson (Gloria Votsis) is seen returning fire with her SIG-Sauer P226.
In "Reality Kills" (S09E06), an activist is seen with what appears to be a Walther P99AS. Delko initially things the gun is real but later discovers that it is in fact a RAP4 P99 RAM paintball gun.
Unknown 1911
In "Blood Sugar" (S09E09), Luis Avilla (Ramón Franco) is seen with an unknown 1911 when confronting the man who had his son deported.
Revolvers
Ruger GP100
In "See No Evil" (S09E03), a gunman is seen with a Ruger GP100 which he aims at a blind man.
Smith & Wesson Model 60
In "Manhunt" (S09E04), Memmo Fierro (Robert LaSardo) is seen with a Gold Plated Smith & Wesson Model 60 which he steals from someone. He later uses it to shoot multiple people at Miami Dade Memorial Hospital.
Submachine Guns
Intratec TEC-9
In "Last Stand" (S09E13), a Mala Noche gangmember is seen with a TEC-9 during a drive-by shooting. As in most films and TV shows, the gun is converted to fully automatic fire.
Assault Rifles
AKMS
In "Last Stand" (S09E13), Mala Noche gangmembers are seen with AKMS rifles when attacking members of the MDPD.
Colt M4A1
In "Reality Kills" (S09E06), an MDPD officer is seen armed with a Colt M4A1. Horatio later takes the gun from him and aims it at a suspect.
Colt Law Enforcement Carbine
In "Happy Birthday" (S09E08), MDPD SWAT officers are seen with Colt Law Enforcement Carbines during a raid on a chop shop.
Unknown AR
In "Fallen" (S09E01), an unknown AR is used as part of a remote shooting platform to ambush the MDPD vehicle transporting Bob Starling, facilitating his escape.
Rifles
Heckler & Koch SR9(T)
In "On the Hook" (S09E07), Dario Aguilar uses a Heckler & Koch SR9(T) that is chambered for 7.62 but fires a 5.56 round with a Sabot. As Calleigh explains, this allows a smaller caliber bullet to be fired from a higher caliber gun with no groves being left on the bullet.
Ruger Mini-14
In "Fallen" (S09E01), a Ruger Mini-14 is seen pointed at Melissa Walls when the CSIs come to ask her some questions.
Shotguns
Remington 870
In "Hunting Ground" (S09E16), Horatio (David Caruso) uses a Remington 870 with synthetic furniture to intimidate a suspect who has been hunting immigrants.
Remington 870 Police Magnum
In "Caged" (S09E19), Eric Delko (Adam Rodriguez) is seen with a Remington 870 Police Magnum shotgun fitted with ghost-ring sights and side-saddle shell holder while searching for Dante Kroll.
Unknown Over-Under Shotgun
In "On the Hook" (S09E07), Charles Hayward is seen with an Over-Under Shotgun shooting clays when the cops come to question him.