Sheriff Stan Watkins (Michael Bowen), Dep. Rolston (Eric Breker), as well as Chris Vaughn (Dwanye "The Rock" Johnson) when he becomes Sheriff of the town. When Watkins and some other of the deputies shoot up the police station, Chris gives his Glock to Deni (Ashley Scott), who helps distract Watkins at one point, but does little more than waste ammo.
Remington 870
Chris Vaughn (Dwanye "The Rock" Johnson) keeps a Remington 870 locked up in his shed. He takes it with him to assault the casino but then decides to instead take a 4"x4" block of wood instead. He gives the 870 to his father, Chris Vaughn Sr. (John Beasley), who declines claiming he put his guns up long ago. Later in the film when the ex-security guards attack Chris' family, Vaughn Sr. takes the 870 and kills the last man with it.
Mossberg 500
Booth (Kevin Durand), one of the guards in the Casino tries to shoot Chris with a Mossberg 500 before being dispatched by him and his block of wood. Later in the film when both Chris and Ray Templeton (Johnny Knoxville) are officers, they are both seen using Mossberg 500 shotguns throughout the film.
Beretta 92FS
One of the security guards in the casino draws a Beretta 92FS when Chris starts a fight for catching a cheating Craps dealer use weighted dice. The same guard uses the Beretta when attacking Chris' family later in the film.
Ithaca 37
One of the guards in the casino wields a sawed-off Ithaca 37 shotgun when Chris assaults the place. Another guard is seen using the M37 when they attack Chris' family.
FN Minimi SPW
While Chris and Deni are in the Sheriff's Department, Stan Watkins and another deputy begin firing FN Minimi SPWs or "Special Purpose Weapons" at them.
M16A3
While Chris and Deni are in the Sheriff's Department, one of the ex-deputies open up with an M16A3 fitted with a 100 round Beta-C magazine.
Not quite. What do you notice about the rear sight that says otherwise?
The rear sight is A1-style, but it has a brass deflector. That means it's most likely a Colt Model 715, which can also be seen in Stargate:SG1 and Harsh Realm. It's a sort of weird in-between variant that's between the A1 and A2/A3 in terms of receiver style.
Makes sense, It also has the heavier barrel like the A2/A3. In the Harsh Realm page, they have it listed a Diemaco C7, but it wouldn't be a Colt 715 since Colt Canada doesn't sell their guns to civies?
Yes, the 715 has a heavier A2-style barrel. And yes, it's probably not a C7; I wrote that before I heard from Al Vrkljan that Diemaco guns aren't available to cinema armorers.
So, what looks like a Colt Canada C7 but in a civilian model?
The 715 is the American equivalent. Also, what do you mean, "civilian model"?
M1911A1
One of the Ex-Security guards in Chris' house is armed with an M1911A1 pistol which he manages to hit Ray in the leg with beofre he stabs him with a potato peeler. He later is shown to still be alive and is shot by Chris Sr. with the 870 shotgun.
MAC-10
An instruction manual for a MAC-10 submachine gun is seen in the Sheriff's Department as it is shot to pieces by the ex-officers.