Nathan Wuornos (Lucas Bryant) carries a Glock 17 as his chief sidearm throughout Season 4. "Lexie" (Emily Rose) fires the Glock to scare Jordan in "The New Girl" (S4E05). The pistol is used by Duke (Eric Balfour) when under the control of Tyler in the same episode. Jennifer Mason (Emma Lahana) takes the Glock to defend herself.
In "Fallout" (S4E01), William (Colin Ferguson) acquires a SIG Pro SP 2009 from a man in the bar. "Lexie" (Emily Rose) grabs the SIG and uses it to threaten William in "Survivors" (S4E02).
In a continuity error, the SIG Pro SP 2009 used by William changes to a SIG-Sauer P226 in "Survivors" (S4E02). The "Sinister Man" (Kyle Mitchell) uses what appears to be a SIG Sauer P226 to threaten Dwight in "William" (S4E09).
Duke Crocker (Eric Balfour) continues to carry a Smith & Wesson 5946 as his chief sidearm throughout Season 4. In "The Lighthouse", Dave Teagues (John Dunsworth) is briefly seen with a Smith & Wesson 5946.
Jordan McKee (Kate Kelton) uses a Remington 870 to stop the Nathan's car in "Fallout" (S4E01). Nathan Wuornos (Lucas Bryant) carries a Remington 870 during the rescue of Dwight in "William" (S4E09). The shotgun later in the episode is seen in the hands of Dwight.
Dwight Hendrickson (Adam Copeland) carries a Taser X26 as his chief sidearm throughout Season 4.
A Taser X26C fitted with an XDPM (Extended Digital Power Magazine), which is a battery pack with a grip extension that can accept a spare cartridge. Like the Taser M26, a laser sight is mounted underneath the muzzle, alongside a tactical LED light.Error creating thumbnail: File missingDwight holds his Taser in "William".Error creating thumbnail: File missingCloseup of the Taser X26 in "William".Error creating thumbnail: File missingDwight gives the Taser to Duke in "The Lighthouse".