Torchwood - Miracle Day is the official name of the fourth season in the series. Much like Children of Earth, it focuses on one plot the entire season. Captain Jack Harkness (John Barrowman) and Gwen Cooper (Eve Myles) are thrown back into action where an unknown phenomenon across Earth means that nobody is able to die. They liaise with CIA agents Rex Matheson (Mekhi Phifer) and Esther Drummond (Alexa Havins) and travel across the globe to further uncover the conspiracy behind the supposed "Miracle Day".
The following weapons were used in Season 4 of the television series Torchwood:
In "End Of The Road", corrupt CIA agents Wilson (Nayo K Wallace) and Baylor (David Desantos) carry WE Hi-Capa 3.8 Bs as their weapons. These are likely stand-ins for genuine sub-compact M1911 style pistols, and follows the trend of the series in using airsoft pistols as props.
Unknown
SIG-Sauer P226
In "The New World", Gwen Cooper (Eve Myles) uses a two-toned SIG-Sauer P226 whilst defending her house during the helicopter attack. A regular P226 is also seen in the hands of a British government operative who aids in the groups capture in the same episode. A kidnapper is seen carrying one in "Immortal Sins". Gwen later uses the two-tone pistol in the finale, "The Blood Line". The Cousin (Chris Butler) carries a regular P226 as his sidearm in the same episode.
Beretta 92F/FS
In "The New World", an assassin is briefly seen with a holstered Beretta 92FS. In "The Categories of Life" and "The Middle Men", the 92F (standing in for the military Beretta M9) is used by Sgt. Ralph Coltrane (Fred Koehler) and Colin Maloney (Marc Vann). In "The Gathering", Gwen Cooper (Eve Myles) is seen carrying one. In the finale episode, "The Blood Line", the pistol is also carried by Argentinian Army soldiers in Buenos Aires.
Beretta 92SB Compact
In "The New World", what appears to be an older Beretta 92SB Compact is seen in the gun cabinet belonging to Gwen Cooper (Eve Myles).
Glock 17
In "Immortal Sins", Gwen Cooper (Eve Myles) uses a Glock 17 after taking it from a Colosanto henchman. The pistol is carried by Section Chief Brian Friedkin (Wayne Knight) and other CIA agents in "End of the Road". Various British and American law enforcement officers are also seen carrying the pistol, including Sergeant Andy Davidson (Tom Price) in "Immortal Sins".
Glock 19
Starting in "Rendition", the Glock 19 is carried by CIA agent Rex Matheson (Mekhi Phifer) as his standard weapon.
Ruger Mk III
In "The Middle Men", Zheng Yibao (Eric Steinberg), an investigator hired by PhiCorp uses a Ruger Mk III with an integral suppressor to shoot the padlock off a fence at the Shanghai Blessing Site.
Zoraki 925
Captain Jack Harkness (John Barrowman) carries a Zoraki 925 as his sidearm throughout the series. It replaces the Webley Mk IV he carried in previous seasons, but is carried in a similar brown leather belt holster.
Heckler & Koch USP
In "The New World", a Heckler & Koch USP is one of many weapons seen in the armory of Gwen Cooper (Eve Myles). In the same episode, CIA Agent Rex Matheson (Mekhi Phifer) requisitions a USP from the British authorities upon his arrival to the UK. In "Immortal Sins", a henchman working for Olivia Colasanto's carries a USP, which is later used by Esther Drummond (Alexa Havins).
Walther P99
In "Escape to L.A.", what appears to be a Walther P99 is carried by an assassin known as The Gentleman (C. Thomas Howell). In "The Gathering", Captain Jack Harkness (John Barrowman) is seen armed with a P99 instead of his Zoraki 925.
Colt M1911A1
In "The New World", a stainless M1911A1 is briefly seen in the gun cabinet belonging to Gwen Cooper (Eve Myles).
Smith & Wesson 1006
In "The New World", what appears to be a Smith & Wesson 1006 is briefly seen in the gun cabinet belonging to Gwen Cooper (Eve Myles).
In "Immortal Sins", the Colt Official Police is carried by several New York Police Department officers in a flashback to 1928.
Webley Mk IV
In "Immortal Sins", Captain Jack Harkness (John Barrowman) is briefly seen collecting a hidden Webley Mk IV (his standard sidearm carried in the first two seasons) as he leaves New York in the 1928 flashback. The revolver is only briefly seen within its leather flap holster.
Unknown Revolvers
In "Immortal Sins", a young man uses an unidentified snubnose revolver to shoot Captain Jack Harkness (John Barrowman) as he is tortured and killed multiple times in 1928 New York City. In "The Blood Line", security guards at the Buenos Aires Blessing Site carry unidentified revolvers in flap holsters as their sidearms.
Shotguns
Mossberg 500
In "The New World", Rhys Williams (Kai Owen) arms himself with a Mossberg 500 with a sawn off stock.
In "Immortal Sins" and "The Gathering", the Heckler & Koch MP5A3 is carried by Authorised Firearms Officers with the South Wales Police.
Heckler & Koch MP5A2
In "The Gathering" , the Heckler & Koch MP5A2 with forend weaponlight is carried by some Authorised Firearms Officers with South Wales Police. In "The Gathering" and "The Blood Line", the MP5A2 is also carried by security guards at both Blessing Sites in Buenos Aires and Shanghai.
Rifles
Ruger M77
In "Immortal Sins", Rex Matheson (Mekhi Phifer) uses a Ruger M77 with a laser aiming module and suppressor.
Assault Rifles
Heckler & Koch G36C
In "The New World", a suppressed Heckler & Koch G36C is carried by an assassin targeting Esther Drummond (Alexa Havins). In the same episode, it is seen in the hands of several Authorised Firearms Officers with South Wales Police. Numerous assailants are seen with the rifle in "The Gathering".
L85A2
In "The Middle Men", L85A2s fitted with SUSAT scopes are carried by British Army soldiers at the Cowbridge Overflow Camp.
M4A1 Carbine
In "The New World", Captain Jack Harkness (John Barrowman) carries an M4A1 with M68 Aimpoint scope and RIS foregrip in "The Categories of Life" and "The Middle Men", California Army National Guard soldiers are seen carrying the rifles, especially those guarding the San Pedro Overflow Camp. One is later briefly acquired by Rex Matheson (Makhi Phifer) in the same episode. The rifles used by Harkness and Matheson in these episodes appear to be Tokyo Marui M4A1 airsoft rifles.
Colt Model 654
At least one California Army National Guard soldier appears to be carrying a Colt Model 654 carbine, identified by its slicksided reciever and fixed carry handle.
FN FAL
In "The Blood Line", the FN FAL is carried by Argentinian Army soldiers under the command of Captain Santos (Benito Martinez). They are seen using them to shoot a fellow soldier who is revealed to be working for The Three Families before he blows up the truck they are in.
Machine Guns
FN M249
In "The New World", an assassin appears to use an M249 when pursuing the Torchwood team in a helicopter.
Missile Launchers
M136 AT4
In "The New World", Gwen uses a M136 AT4 to shoot down a helicopter.
RPG-7
In "The New World", an assassin in the helicopter is seen firing an RPG-7 at Gwen Cooper (Eve Myles), Rhys Williams (Kai Owen), and Rex Matheson (Mekhi Phifer).