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The following weapons were used in Season 1 of the television series The Flash:
A Beretta 92FS is used by a security guard in "The Fastest Man Alive" and in "Plastique". General Wade Eiling (Clancy Brown) uses one as his sidearm to be a substitute for the actual M9. The Clock King (Robert Knepper) takes one from a disarmed CPD officer and uses it to seize control of the precient in "Power Outage". A bank guard uses one before he lost his sidearm at the start of "Flash vs. Arrow".
Beretta Px4 Storm
Beretta Px4 Storms were seen in the hands of casino guards in the middle of "Rogue Time".
Crossman 2240 CO2 Pistol
A Crossman 2240 pistol in a stainless steel finish is used by Barry Allen (Grant Gustin) loaded with tracking darts in "Grodd Lives".
CZ-75
A CZ-75 is used by a crewman working for Leonard Snart when he decides to go rogue with his fellow crewan near the end of "Going Rogue".
Glock 17
A Glock 17 was seen unattended at Hex's Gunshop at the start of "The Fastest Man Alive". A two-tone version is used by a suspect fleeing the police at the start of "Things You Can't Outrun".
Glock 17 (Full Automatic)
Several Glock 17s were seized from Hex's Gunshop at the start of "The Fastest Man Alive", which were then modifed off-screen to be fired at full automatic mode and used by Danton Black (Michael Christopher Smith). This is is contrary to episode dialog where it mentions six Glock 19s were stolen.
Heckler & Koch USP Compact
A Heckler & Koch USP Compact with a stainless slide was used by James Jesse/The Trickster I (Mark Hamill) during a heist near the end of "Tricksters".
IMI Desert Eagle
An IMI Desert Eagle is used by Clay Parker (Micah Joe Parker) as his sidearm throughout "Crazy for You".
Kimber Warrior
Leonard Snart (Wentworth Miller) appears to use a Kimber Warrior as his sidearm in "Going Rogue".
Makarov PM
A Makarov PM with a stainless steel finish is used by Dr. Harrison Wells (Tom Cavanagh) in "The Sound and the Fury".
SIG-Sauer P226R
The SIG-Sauer P226R is used by the Central City Police Department for plainclothes officers.
SIG-Sauer P226
What appears to be a SIG-Sauer P226 is used by Detective West briefly in "Crazy For You". Hannibal Bates, using the face of Barry Allen, brandishes a P226 in the middle of "Who is Harrison Wells".
SIG-Sauer P228
A SIG-Sauer P228 is now seen in the hands of Detective West, first seen in the middle of "Power Outage".
SIG-Sauer P229R
The SIG-Sauer P229 appears to be the sidearm used by Detective Eddie Thawne (Rick Cosnett) when he transferred to the Central City Police Department. Captain David Singh (Patrick Sabongui) uses one as his sidearm in "Out of Time".
SIG-Sauer P250 Compact
The SIG-Sauer P250 is seen in the hands of Ronnie Raymond (Robbie Amell) when his body was under the control of Professor Stein near the end of "The Nuclear Man".
Taser X3
A Taser X3 is used by Dr. Wells in the middle of "Who is Harrison Wells" to take out the fake Barry Allen.
Revolvers
Chiappa Rhino DS
Clyde Mardon (Chad Rook) uses what appears to be a Chiappa Rhino 20DS at Detectives Chyre and West in "Pilot".
Colt Single Action Army
A Colt Single Action Army is seen drawn in on the signage for Hex's Gunshop at the start of "The Fastest Man Alive".
Smith & Wesson Model 19
A Smith & Wesson Model 19 is used by a robber at the start of "Power Outage".
Submachine Guns
Beretta PM12S
A crewman working for Leonard Snart is armed with a Beretta PM12S at the start of "Going Rogue".
Heckler & Koch MP5A3
Heckler & Koch MP5A3s are used by CPD SWAT officers, first seen in "Power Outage".
IMI Uzi
An IMI Uzi with a wooden buttstock is seen displayed on the wall of Hex's Gunshop in "The Fastest Man Alive".
Kimel AP-9
A Kimel AP-9 is used by gunmen working under Marcus Stockheimer in "Crazy for You".
Shotguns
Remington 870
A Remington 870 with a M4-type shoulder stock is used by Detective West as his main weapon in "Grodd Lives".
UTAS UTS-15
A UTAS UTS-15 is seen in "Grodd Lives" slung at the back of the armored robber, which is never fired.
Assault Rifles
AR-15
A few AR-15-type assault rifles are seen untouched in a broken gun display at Hex's Gunshop in "The Fastest Man Alive".
Colt M4A1
The Colt M4A1 is used by American soldiers, first seen in "Plastique". It's used by Federal Reserve Police officers in "Grodd Lives". CPD SWAT officers use them throughout the season.
FN SCAR-L
A FN SCAR-L with a black finish is used by Axel Walker/The Trickster II (Devon Graye) during a heist near the end of "Tricksters". The armored robber has one during an attempted heist in "Grodd Lives".
Norinco Type 56-2
A Norinco Type 56-2 is seen displayed on the wall of Hex's Gunshop in "The Fastest Man Alive".
Battle Rifles
FN FAL
What appears to be an FN FAL is seen displayed on the wall of Hex's Gunshop in "The Fastest Man Alive".
Bolt-Action Rifles
Swedish M41 Mauser
A Swedish M41 Mauser is seen on the right side of the wall in "The Fastest Man Alive".
Unknown
Shotguns
Remington 870
A Remington 870 with a weaponlight is used by CPD SWAT officers, first seen in "Flash vs. Arrow".
Sniper Rifles
Norinco NDM-86
A Norinco NDM-86 is seen displayed on the wall of Hex's Gunshop in "The Fastest Man Alive".
Norinco QBU-88
What appears to be a Norinco QBU-88 is seen displayed on the wall of Hex's Gunshop in "The Fastest Man Alive".
Machine Guns
Browning M2
A Browning M2 was seen in a US Army Humvee when soldiers attempt to intercept Firestorm near the end of "Fallout".
Rocket Launchers
AT4
An AT4 was used by a US Army soldier in "Fallout" loaded with a special white phosphorus round.
M72 LAW
A M72 LAW is used by an armored robber at the start of "Grodd Lives".
Grenade Launchers
FN Mk 13 Mod 0
A FN Mk 13 Mod 0 mounted underneath the barrel of a FN SCAR-L with a black finish is used by Axel Walker/The Trickster II during a heist near the end of "Tricksters". The armored robber has one during an attempted heist in "Grodd Lives".
Others
Hex's Gunshop rifles
A variety of rifles are seen at the shelves in Hex's Gunshop in "The Fastest Man Alive".
Oneida Eagle Kestrel
The Oneida Eagle Kestrel is used by Oliver briefly in Central City throughout "Flash vs. Arrow".
Captain Cold's Cold Gun
Leonard Snart, A.K.A. Captain Cold (Wentworth Miller) is seen wielding a custom gun that fires a "beam" of ice. The weapon was created by Cisco Ramon.
Heatwave's handheld flamethrower
Mick Rory, A.K.A. Heatwave (Dominic Purcell) wields a customised handheld flamethrower given to him by Leonard Snart. It, like the Cold Gun, was also created by Cisco Ramon.
Lisa Snart's Golden Gun
Lisa Snart (Peyton List) uses a Golden Gun that can freeze things solid made by Cisco. It first appeared in "Rogue Time".
Cisco's Freeze Rifle
Cisco Ramon (Carlos Valdes) demonstrate a prototype freeze rifle he made in STARS Labs in order to demonstrate the usefulness of anti-freeze ballistic shields in "Revenge of the Rogues".