The following weapons were used in the anime series Guilty Crown:
The standard sidearm for the GHQ is the Glock 17. Inori uses one in several episodes as well as several Funeral Parlor members. GHQ 2nd Lieutenant Daryl Yan's Glock is OD green.
Funeral Parlor's leader, Gai Tsutsugami, carries a Luger P08 as his personal sidearm.
Tokarev TT-33 Pistol
One of the school's students was carrying around a Tokarev TT-33 Pistol but was disarmed of it later in the episode.
A fictional Vektor CP1 with a manual safety is given to Gai.
Inori was seen wielding this gun, very similar Model to the Taurus PT709 slim compact.
Heckler & Koch MP7A1
The GHQ uses the Heckler & Koch MP7A1 with lateral rails removed as their submachine gun.
Heckler & Koch MP5K
The Heckler & Koch MP5K seems to be the main submachine gun used by the Resistance group Funeral Parlor. Shu and Gai had handled one.
Brügger & Thomet MP9
The MP9 is seen in Gai's hands during the airport gunfight.
Assault Rifles & Carbines
A GHQ sniper was seen with a heavily modified M4A1 with a scope and suppressor.
Funeral Parlor members were seen wielding AKS-74Us.
Funeral Parlor members were seen with what appear to be Iraqi Tabuk sniper rifles with AK-47 wooden stocks.
Anti-Bodies snipers used Remington 700PSS during an ambush.
Mk 153 Mod 0 SMAW
The SMAW is seen in Gai's hands and is used against GHQ's soldiers.
The AT4 is used to shoot down a GHQ helicopter. Due to the missile's trajectory it might be erroneously shown as firing guided missiles.
Dillon Aero M134 Minigun
The M134 is seen mounted on a GHQ's vehicle.
Funeral Parlor's Arsenal
A bunch of weapons including RPG-7, Panzerfaust-3, SR25 and various other guns are visible in the arsenal.