Fancy Lee (Sean Baek) carries a Brügger & Thomet VP9 as his sidearm. The VP9 differs from the standard factory one he used in the previous season, instead being fitted with the same under barrel attachment as the one carried by Dutch in "Kiss Kiss, Bye Bye" (S01E07).
Glock 17 (FAB Defense KPOS)
Dutch (Hannah John-Kamen) carries a Glock 17 in a FAB Defense KPOS carbine conversion kit (without the stock fitted) whilst inside Eulogy in "Dutch and the Real Girl" (S02E01).
Colt M1911A1 (Hera Arms CPE)
A Colt M1911A1 inside a Hera Arms CPE (without the stock fitted) is carried by Pree (Thom Allison) whilst infiltrating Eulogy in "Dutch and the Real Girl" (S02E01). The weapon has what appears to be an ATPIAL (AN/PEQ-15) laser sight fitted to the top rail.
Dutch (Hannah John-Kamen) uses a CZ Scorpion Evo 3 A1 as her main weapon in several episodes. The weapon is fitted with an optical sight, a flashlight, and a cylinder of unknown purpose which appears to be a shortened version of the same attachment used on the Tavors.
EKOL ASI Uzi
Several EKOL ASI Uzis with 25 round magazines can be seen in "Dutch and the Real Girl" (S02E01).
Heckler & Koch MP7A1
Several criminals carry Heckler & Koch MP7A1s fitted with red dot sights in "Dutch and the Real Girl" (S02E01).
Assault Rifles
IMI Tavor TAR-21
IMI Tavor TAR-21s are the main rifles used by the Killjoys in the series.
John Jaqobis (Aaron Ashmore) carries a Jing Gong Thunder Maul (a futuristic airsoft AR-15 variant) in "Dutch and the Real Girl" (S02E01).
Custom AR-15 Pistol
Toad (Ryan Blakely) carries a pistol chopped down from an AR-15 of some sort in "Dutch and the Real Girl" (S02E01). Based on the fact that it has a flat top receiver and a thick carbine length handguard it is a newer variant from the Colt M4 onwards. The weapon feeds from a magazine resembling a mini version of a Beta-C drum and has a scope offset to the left side of the weapon. Due to the fact that the gas block and buffer tube are missing a real weapon modified in such a manner would be non-functional.
FAMAS F1
A pair of FAMAS F1s can be seen inside a crate in "Dutch and the Real Girl" (S02E01). One is unmodified, whilst the other has a barrel shroud and a large cylindrical assembly attached to the side of the carry handle.
Custom AKMS Variant
A customised AKMS variant can be seen inside a crate in "Dutch and the Real Girl" (S02E01). The rifle is fitted with a railed handguard with a Magpul AFG, AR-15 carry handle and a folding BUIS (mounted rather redundantly behind the carry handle). Based on the smooth top cover and Chinese style side folding stock this rifle may be a Norinco Type 56-2, however as the original barrel and front sight has been replaced this is impossible to confirm.
Launchers
FN Mk 13 Mod 0 (standalone)
Standalone Mk 13 Mod 0s appear in several episodes.
Other Weapons
Nerf N-Strike Elite Firestrike
Visually modified Nerf N-Strike Elite Firestrike toy pistols are the sidearm carried by the "Red 17" guards on Arkyn in "Dutch and the Real Girl" (S02E01).
Advanced Taser M26
One of the criminals in Eulogy carries an all black Advanced Taser M26 in "Dutch and the Real Girl" (S02E01).
"Alice"
Clara (Stephanie Leonidas) has a prosthetic arm which she has nicknamed Alice in "Dutch and the Real Girl" (S02E01). Instead of a hand the arm has a three barelled rotary machine gun, and can deploy a grenade launcher from the forearm.
Tippman TPX
Liam Jelco (Pascal Langdale) carries a sidearm which appears to actually be a modified Tippman TPX paintball pistol fitted with side rails and a full-length top rail.
Home-made Shotgun
Throughout the series a common weapon used by criminals and the lower classes is a weapon which appears to be based on a shotgun receiver fitted with a large pipe like barrel. Based on that fact that they are seemingly never shown live firing and the necessary modifications would require entirely removing the barrel and magazine tube from the donor weapon, it is likely that these are based on airsoft guns or are modified castings of a real weapon.