The Glock 19 is carried by several law enforcement officers including Det. Wyms (CCH Pounder) and Agent Olivia Murray (Laurie Holden).
IMI Desert Eagle Mark I
A .357 Desert Eagle is used by Vic for the rest of Season 7 after he quits the force. He claims to carry it on a "cross draw" holster. He is notably seen taking it out of his desk drawer and putting it in his waistband in the final scene of the series.
Revolvers
Smith & Wesson Model 66
A Smith & Wesson Model 66 is used by Mara (Michele Hicks) in "Possible Kill Screen" (S7E12). The revolver is later seen on a bathroom floor in the series finale "Family Meeting" (S7E13).
Shotguns
Mossberg 500 Cruiser
The Mossberg 500 Cruiser is used throughout the series, usually by Det. Curtis "Lemonhead" Lemansky (Kenneth Johnson).
Mossberg 500
Uniformed officers are seen armed with the Mossberg 500 throughout the series.
Submachine Guns
Cobray M11/9
A Cobray M11/9 is seen in the hands of a gang member in the Army/Navy Surplus Store in Season 7's premiere "Coefficient of Drag" (S7E01). It is semiautomatic only.
What appears to be a CAR-15 is seen in the hands of a gang member in the Surplus Store in Season 7's premiere "Coefficient of Drag" (S7E01).
AKM
AKM rifles are also briefly seen in a cache of weapons in the Surplus Store in Season 7's premiere "Coefficient of Drag" (S7E01).
AKMS
An AKMS is briefly seen in the hands of a gang member in the Surplus Store in Season 7's premiere "Coefficient of Drag" (S7E01).
Other
Weapons Cache
A cache of weapons is seen when the Strike Team raids a gang-owned Army/Navy Surplus Store in Season 7's premiere "Coefficient of Drag" (S7E01). On a table several AKM's and numerous magazines can be seen. A gang member also uses one.