Najica Hiiragi is armed with an Stechkin APS as her main sidearm. For mission requiring stealth is changes to a Stetchkin APB with the correct offset suppressor.
Desert Eagle VII
Humaritt ZZZ "Lila" uses a Desert Eagle Mark VII with a 10" barrel as her main sidearm.
Mauser HSc
The "Madame" in "Mission: 001 - A Magnificent Secret Agent with a Rose in Her Hands" uses a Mauser HSc.
Glock 17
A henchman in "Mission: 004 - The Fictitious Star with a Sweet Trap-Like Perfume" can be seen with a Glock 17
Unidentified Pocket Pistol
Najica uses an unidentified pistol connected to an arm rig in "Mission: 004 - The Fictitious Star with a Sweet Trap-Like Perfume".
Heckler & Koch USP Compact
A pair of Kirnovf agents, Fanc and Lady, use Heckler & Koch USP Compacts in "Mission: 007 - The Murderous Bullet Shot with a Wry Smile".
Walther P38
A Walther P38 is used by Elith aka LLL in "Mission: 009 - A Brave Lion in the Desert Appears with the Goddess of the Destiny".
Fuyuki, one of the members of the 4 C'zNs, uses an M3 "Grease Gun" in "Mission: 004 - The Fictitious Star with a Sweet Trap-Like Perfume".
MP 3008
Several crew members on Ricardo Kidel's ship carry MP 3008s (a German copy of the Sten Mk II with a vertical magazine) in "Mission: 005 - The Fragile Dream with a Crimson Colored Horizon".
Heckler & Koch MP5A3
The military personnel who arrive to arrest Ricardo Kidel and his crew carry Heckler & Koch MP5A3s in "Mission: 005 - The Fragile Dream with a Crimson Colored Horizon".
Minebea M-9
Several Minebea M-9s are used by the team transporting the masterless Humaritt BBB in "Mission: 006 - The Beautiful Eye of the Wild Beast Appears with the Shadow of Loneliness".
Unknown Submachine Guns
Assault Rifles
FAMAS
Several FAMAS F1s appear in a French Foreign Legion photograph of a potential assassin in "Mission 002 - A Pretty Partner with a Gun in Her Hands"
L1A1
Ai Irie aka III uses a L1A1 SLR when she takes on Najica and Lila in "Mission: 004 - The Fictitious Star with a Sweet Trap-Like Perfume".
Futuristic Assault Rifle
Several futuristic assault rifle variants can be seen in the series.
Sniper Rifles
Gewehr 43
The Humaritt Koharu (SSS) uses a Gewehr 43 with a ZF 4 scope in "Mission: 005 - The Fragile Dream with a Crimson Colored Horizon".
PGM Hecate II
A pair of assassins in "Mission 002 - A Pretty Partner with a Gun in Her Hands" are both armed with PGM Hecate IIs. The kidnapper Fanc also uses a PGM Hecate II in "Mission: 007 - The Murderous Bullet Shot with a Wry Smile".
Custom Barrett M82A1
Lila uses a custom Barrett M82A1 whilst hunting the masterless Humaritt BBB in "Mission: 006 - The Beautiful Eye of the Wild Beast Appears with the Shadow of Loneliness". It has been modified by removing the sights and sight rail, adding a vertical forward grip, removing the buttstock, shortening the barrel, and fitting a large circular muzzle brake.
Battle Rifles
FG42
Lila uses a FG42 when she engages Rasse Pewnt's henchman on a transport ship in "Mission: 008 - The Sky of the Desire Appears with the Flame by the Battle."
Flintlock Musket
An unidentified flintlock musket is used by the butler in "Mission: 001 - A Magnificent Secret Agent with a Rose in Her Hands"
Machine Guns
Phalanx CIWS
Two Phalanx CIWSs can be seen mounted on the Ōsumi-class amphibious transport dock that CRI uses as a mobile base of operations.
MK 108 Cannon
Lila uses what appears to be a MK 108 cannon fitted with grips in "Mission: 003 - Ugly Relics in the Jet-Black Darkness".
Browning .303 Mk II
A turret containing what appears to be a pair of Browning .303 Mk II machine guns can be seen on the top of the submarine belonging to Ricardo Kidel in "Mission: 005 - The Fragile Dream with a Crimson Colored Horizon".
ADEN cannon
Pacific Medical uses a BAe Sea Harrier fitted with a pair of ADEN cannons in under-fuselage pods in "Mission: 006 - The Beautiful Eye of the Wild Beast Appears with the Shadow of Loneliness".
GE M134 Minigun
A Humaritt named XXX was armed with an GE M134 Minigun in the "Mission: 11 - The Sad Parting Mission with Girl's Sincerity."
Launchers
Unidentified Grenade Launcher
Najica and lila use unidentified grenade launchers whilst attempting to subdue BBB in "Mission: 006 - The Beautiful Eye of the Wild Beast Appears with the Shadow of Loneliness". The general shape of the weapon resembles that of an airsoft CAW 40mm Grenade Launcher fitted with a stock, however it is reloaded via a loading gate rather than by the weapon breaking as is the norm for multi-shot grenade launcher, suggesting that this weapon may be entirely fictitious.
Kampfpistole
Najica is issued with a Kampfpistole firing explosive charges whilst attempting to hunt down BBB in "Mission: 006 - The Beautiful Eye of the Wild Beast Appears with the Shadow of Loneliness". It is used with the grenade launching sight, but lacks the stock that was normally attached when used in this role.
Panzerfaust
Other Weapons
RGD-5 Hand Grenade
Several RGD-5 hand grenades can be seen in a case belonging to Najica in "Mission: 001 - A Magnificent Secret Agent with a Rose in Her Hands".
M26 hand Grenade
Lila uses an M26 hand grenade in "Mission: 003 - Ugly Relics in the Jet-Black Darkness".