The following weapons were used in the film Saw VI:
The Glock 17 pistol once again makes an appearance in the film as Detective Mark Hoffman's (Costas Mandylor) duty sidearm, it can also be seen being carried by Agent Erickson (Mark Rolston), and fired by Agent Perez (Athena Karkanis) when they discover Hoffman is behind the killings. Upon hearing a disturbance in his office building late at night at seeing the shadow of a man with a gun, William (Peter Outerbridge) retrieves a Glock pistol from a drawer and uses it to shoot the man which turns out to be a security guard just before he is ambushed from behind by the real assailant.
Smith & Wesson 5946
What appears to be the Remington 870 two shot extension express model is rigged up in a trap in the scene where William (Peter Outerbridge) must select whom from on the wheel of six people dies, four of the six must die. As the wheel turns William decides who lives or dies by either enduring pain himself to save two of his choice or not doing anything for the other four and when the person stops in front of the shotgun if William chooses to not do anything, the mechanism the shotgun is rigged to, aimed at them cycles the action and fires at them; killing them.
A flashback sequence of Jigsaw/ John Kramer (Tobin Bell) confined to a wheel chair holding the 12 Gauge Double Barreled Shotgun from the glass box that killed the judge in Saw III as he, Hoffman, and Amanda set the trap up.