[[Image:PaybackS&W27-1.jpg|thumb|none|600px|The pawn shop owner hands Porter a Smith & Wesson Model 27 from off the rack. His lack of gun safety is pretty obvious as he hands him the gun with the hammer cocked and his finger on the trigger.]]
[[Image:PaybackS&W27-1.jpg|thumb|none|600px|The pawn shop owner hands Porter a Smith & Wesson Model 27 from off the rack. His lack of gun safety is pretty obvious as he hands him the gun with the hammer cocked and his finger on the trigger.]]
[[Image:PaybackS&W27-2.jpg|thumb|none|600px|'''Left:''' Porter swings open the cylinder and spins it. A ratcheting sound effect is heard even though there is nothing for the cylinder to ratchet against. '''Right:''' Porter examines the gun like a real pro by pointing the muzzle at himself.]]
[[Image:PaybackS&W27-2.jpg|thumb|none|600px|'''Left:''' Porter swings open the cylinder and spins it. A ratcheting sound effect is heard even though there is nothing for the cylinder to ratchet against. '''Right:''' Porter examines the gun like a real pro by pointing the muzzle at himself.]]
[[Image:PaybackS&W27-3.jpg|thumb|none|600px|After doing some flashy twirling, Porter hands the shop owner the Model 27 back to make a purchase. No FFL, no handgun liscence, no waiting period, no way...]]
[[Image:PaybackS&W27-3.jpg|thumb|none|600px|After doing some flashy twirling, Porter hands the shop owner the Model 27 back to make a purchase. No FFL, no handgun liscence, no waiting period, no way...
''Speaking as an Oregonian, Handgun licenses and waiting periods are not always required for handgun purchases and being as no specific location was ever given in the film (it takes place in a generic big city) there is no reason to assume these restrictions are necessisary (although a background check should have been conducted)'']]
[[Image:PaybackS&W27-4.jpg|thumb|none|600px|Porter searches his wife's house with his Model 27 at the ready. He has a "USMC" tattoo on his shoulder, so you'd assume he'd know how to clear a room. Instead he does what is typically done in films and wanders around the house with the revolver cocked and pointed at the ceiling.]]
[[Image:PaybackS&W27-4.jpg|thumb|none|600px|Porter searches his wife's house with his Model 27 at the ready. He has a "USMC" tattoo on his shoulder, so you'd assume he'd know how to clear a room. Instead he does what is typically done in films and wanders around the house with the revolver cocked and pointed at the ceiling.]]
[[Image:PaybackS&W27-5.jpg|thumb|none|600px|A Model 27 with regular grips is seen in Detective Hicks' ([[Bill Duke]]) holster.]]
[[Image:PaybackS&W27-5.jpg|thumb|none|600px|A Model 27 with regular grips is seen in Detective Hicks' ([[Bill Duke]]) holster.]]
Porter (Mel Gibson) uses a blued Smith & Wesson Model 27 4" with S&W factory combat grips for the majority of the film after buying it in a pawn shop. It is not a Smith & Wesson Model 29 as previously mentioned, as the diameter of the muzzle and cylinder chambers is clearly too small to be .44 Magnum.
Val Resnick (Gregg Henry) carries a Beretta 92FS pistol as his main sidearm, which Porter (Mel Gibson) takes from him and uses for the rest of the film.
Porter is then held at Gunpoint by Pearl (Lucy Liu) armed with a Walther PPK with Pearl grips.
SIG-Sauer P220
A chinesee gang member fires a SIG-Sauer P220. Porter steal this from a bodyguard to fires Carter. (Thanks to MT2008)
M3 "Grease Gun"
At one point in the movie, Porter is attacked by a group of Chinese gangsters he had robbed earlier, two of them are armed with M3 "Grease Guns". They clearly have a charging handle making them the older M3s, not M3A1s.
Glock 17
A Chinese mobster is seen firing a Glock 17 2nd Generation at Porter.