A SIG-Sauer P232 was used by a Security Police officer in "Murder at the Ball" before she was killed. Public Prosecutor Office agents sent to the Sasa estate in "House, Unmasked" use P232s as their main sidearms. Shinjuro and Inga criticize them for carrying firearms, which is correct since actual Public Prosecutor employees, regardless of their status, are not lawfully allowed by the Ministry of Justice to be armed. However, this may be due to the fact that in the Un-Go world, Japan had just been through a major war with several terrorist attacks that the MOJ had allowed all law enforcement personnel including Public Prosecutor employees to have pistols with them for protection in light of another terrorist attack.
Error creating thumbnail: File missingSIG-Sauer P232 - .380 ACP. Built between 1996-Present.Error creating thumbnail: File missingThis image is flipped to have a good view of the pistol. Note the buckle at the bottom of the pistol grip, which allows SP officers to secure the weapon via lanyard should a hostile person try to disarm them of the pistol.Error creating thumbnail: File missingA Public Prosecutor agent fires his P232 at the supposed Sasa doctor.Error creating thumbnail: File missingPublic Prosecutor agents about to raise their P232s when they encounter Izumi Koyama of the Public Prosecutor Office's Joint Coordinating Department.
Walther PPK
A stainless Walther PPK is used by Seigen Hayami in the OP/ED sequence of Un-Go. It's also seen in his hands in "The King of Paradise" and in "I'm Just Searching".
A HK416 is vaguely seen in amateur video feeds in "Rinroku Kaishou's Crime".
Error creating thumbnail: File missingHeckler & Koch HK416 with 10 inch barrel - 5.56x45mm NATO.Error creating thumbnail: File missingA PSF officer shoots an anti-government protestor in amateur video feed released on the internet. The HK416's barrel and all is a bit hard to see due to the animation quality.Error creating thumbnail: File missingThe same PSF officer holding the HK416 while confronting other anti-government protestors. Like the screenshot above, the rifle's barrel, iron sights, etc. are hard to see due to the animation quality.
Submachine Guns
Ingram MAC-11
An Ingram MAC-11 was seen in "I'm Just Searching" when the rigged conference table revealed a MAC-11 among other weapons.
A Browning M2HB is seen mounted on top of an Abrams MBT in "Masked Mansion" during a flashback sequence. A Public Security Force Humvee in the Greater Tokyo Area in "House, Unmasked" on patrol while conducting surveillance also has a M2HB. It's also seen in "The Phantom Statue" on top of a Type 10 MBT.
In the episode "Masked Mansion", an Abrams tank can be seen armed with two M240 machine guns; an M240C mounted coaxially next to the main gun, and an M240D mounted at the Loader's hatch fitted with a gun shield.
Several M67 hand grenades are seen on a table next to the AK-47-wielding gunmen in a flashback sequence in "Masked Mansion".
M67 fragmentation grenade.Error creating thumbnail: File missingOn the table on the right side of the photo, you can see M67 grenades on top of it next to a bag.
Others
Taser Handcuffs
Used by Shinjuro in "The King of Paradise" after it was given to Rie originally to shock anyone in a dream state.
