Some of the mercenaries hired by Francis Gibson are armed with Beretta 92FS pistols as their sidearm throughout the show. General Mark Osborne (Fredric Lehne) arms himself with a Beretta 92FS after he got free from his restraints by White House Chief of Staff Frank Beckwith near the end of "What Was Done to You". Special Agent Hurst (David Andrews) takes a 92FS after being freed from his cell in "Homecoming". First Son Kyle Devore (Adam Scott Miller) uses one taken from a dead mercenary in the same episode.
"Non" Beretta 92F
Glock 17
FBI Special Agent Susie Dunn (Rachael Taylor) uses a Glock 17 as her main sidearm in the show. Kingsley Grand Hotel security guards use Glock 17s as their sidearm in "What Was Done to You". CIA Security Protective Services officers use Glock 17 as their main sidearm.
Glock 19
Special Agent Hurst drop a Glock 19 on a kitchen table in "Designated Allies", taken from a disarmed mercenary before he was forced to disarm himself.
IMI Micro Uzi Pistol
A couple of mercenaries disguised as EMTs try to open fire with IMI Uzi Pistols at Special Agent Marcus Finley and Special Agent Susie Dunn near the end of "If You Are Watching This, I Am Dead".
SIG-Sauer P229
The SIG-Sauer P229 is used by United States Secret Service agents as their main sidearm in the series.
SIG-Sauer P229R
In a brief state of possible continuity error, Special Agent Finley's sidearm changes from a regular P229 to a SIG-Sauer P22R in "If You Are Watching This, I Am Dead".
Submachine Guns
Heckler & Koch MP5A3
Armed mercenaries recruited by Gibson are armed with Heckler & Koch MP5A3s as their main submachine gun.
Assault Rifles
Colt Law Enforcement Carbine
Colt Law Enforcement Carbines are used by some FBI Hostage Rescue Team operators, irst seen in "Here He Comes".
Colt M4A1
The Colt M4A1 is seen in the hands of American law enforcement personnel throughout the show.
Colt Model 933
At least one FBI SWAT operator is seen armed with a Colt Model 933 near the end of "Here He Comes".
Heckler & Koch HK416
Heckler & Koch HK416 assault rifles are used by some HRT operators as their main assault rifle, first seen in "Here He Comes".
Mark 18 Mod 0
US commandos are seen using Mark 18 Mod 0s during Operation Lennox via night vision camera video feed in "We Were Supposed to Help Each Other". It's seen in a photograph found by Special Agents Dunn and Finley at the end of "Designated Allies". One HRT operator is seen with the Mark 18 Mod 0 near the end of "Here He Comes" during a rescue operation.