The following weapons appear in the television series FlashForward:
The SIG-Sauer P226 is the sidearm of FBI Agents Mark Benford (Joseph Fiennes), Demetri Noh (John Cho) and other Mosaic investigation agents investigating the global blackout. The agents are seen firing their P226s when they are ambushed by unknown men after the congressional hearing. Notably, in the episode "A561984", Benford's pistol is revealed to be registered A561984, and is described that this gun was used to kill Demetri on March 15, 2010. Simon Campos (Dominic Monaghan) uses one very briefly in Somalia and Marcie Turoff (Amy Rosoff) uses one to kill multiple agents when she is discovered as the mole.
SIG SG 552
What appears to be a SIG SG 552 is held by a prison guard.
In Somalia, FBI agents Janice Hawk, Demetri, a Red Panda employee and CIA agent Marshall Vogel (Michael Ealy) steal FN FAL rifles while escaping from the Somali militia and used them before being recaptured.
Heckler & Koch G36C
Used by the men who kidnap Lloyd Simcoe at the hospital.
Used by Aaron Stark (Brían F. O'Byrne) when he's hiding out, trying to get Tracy back.
AKs are used by the Somali militia when the Mosaic investigation team go to Ganwar to investigate the flash forward incident of 1991. Some are stolen by the FBI agents as they try to escape. AKs are also used by Afghan tribal men when Aaron Stark goes to Afghanistan to search for his daughter.
Webley Mk IV
The Webley is used by Dyson Frost (Michael Massee) before he is disarmed by Mark, Mark then uses it until he saves Demetri.
Smith & Wesson Model 19
A Smith & Wesson Model 19 is used by Bryce in the Pilot when contemplating suicide, A nickle plated Model is then used in "The Gift". both have 4 inch barrels and the nickle plated model sports fake ivory grips
Smith & Wesson 4506
A second Generation Glock pistol is seen in a bag with and unknown assault rifle given to Aaron Stark by Stanford Wedeck (Courtney B. Vance) in "Let No Man Put Assunder" (1x16). Another is seen in a case with an H&K MP5K.
Seen in a black case given to Aaron Stark (Brían F. O'Byrne) by Wedeck in "Let No Man Put Assunder" (1x16).
Heckler & Koch MP5A2
Heckler & Koch MP5A3
FBI Field SWAT agents carry Heckler & Koch MP5A3's as they are deployed to.
Unknown Assault Rifle
Seen in a bag handed to Aaron Stark (Brían F. O'Byrne) with a Glock pistol, looked a bit like a SIG SG 552, but I'm not sure.
Type 69 RPG
The Type 69 RPG makes a brief appearance in episode 14: Better Angels. It is seen for a brief moment being handled by a Somali combatant just before being shot in the leg and accidentally pulls the trigger and destroys a random structure. It identified as the Type 69 RPG and not the RPG-7 because of its carry handle with no rear grip and has a thicker pinkish heat shield. It is seen from a few distance but the weapon is still very visible.