Members of the Rest In Peace Department (RIPD) including Roy Pulsipher (Jeff Bridges) and Nick Cruz Walker (Ryan Reynolds) carry specialized revolvers as their sidearm. The weapon is a fantasy revolver with an exceptionally large cylinder and short barrel, based on a top break revolver design, like the Colt Schofield. "Deados" are also seen with the type of pistol during a firefight with the RIPD.
RIPD Rifle
The RIPD also use what appears to be a specialized rifle similar to their handgun, with several barrels in a cylindrical shape and fitted with what appears to be a shotgun pistol grip.
Handguns
Glock 17
The Glock 17 is carried by police officers as their sidearms, which is likely meant as a stand-in for the Glock 22, the real standard sidearm of Boston Police Department (BPD). The pistol is seen prominently during the opening raid.
Several Remington 870 shotguns are seen carried by several characters, including Bobby Hayes (Kevin Bacon), as their primary weapon.
Machine Guns
Handheld M134 Minigun
A handheld configuration of the M134 Minigun is used by a dark soul. The particular minigun used in the film fires the same ammo used in the RIPD's revolvers and rifles.