(→Smith & Wesson Model 29: I know I went ape on screencaps, but at least I left some interesting commentary. Read the captions to take your minds off the amount of pictures.)
[[Image:PaybackS&w27-17.jpg|thumb|none|600px|Internal Affiars officers show off Porter's original Model 27 to Det. Hicks ([[Bill Duke]]) and Det. Leary ([[Jack Conley]]) after Porter left the gun (covered with their fingerprints) at the scene of Val's murder, along with one of their badges.]]
[[Image:PaybackS&w27-17.jpg|thumb|none|600px|Internal Affiars officers show off Porter's original Model 27 to Det. Hicks ([[Bill Duke]]) and Det. Leary ([[Jack Conley]]) after Porter left the gun (covered with their fingerprints) at the scene of Val's murder, along with one of their badges.]]
== Smith & Wesson Model 28 Highway Patrolman ==
Porter ([[Mel Gibson]]) uses a [[Smith & Wesson Model 27 / 28|S&W M28 Highway Patrolman]] .357 Magnum with a four-inch barrel to hold up Pearl ([[Lucy Liu]]).
[[Image:S&WHP1.jpg|thumb|none|300px|Smith & Wesson Model 28 Highway Patrolman.]]
[[Image:Payback6.JPG|thumb|none|500px|Porter armed with a Smith & Wesson Model 28.]]
[[Image:PayM282.jpg|thumb|none|500px|Porter takes the gun from Arthur Stegman ([[David Paymer]]).]]
[[Image:PayM283.jpg|thumb|none|500px|In the shootout with the Chinese gangsters Porter's revolver shoot about 30-32 shots!]]
[[Image:PayM284.jpg|thumb|none|500px|Porter kills a Chinese gangster trying to escape from the car.]]
[[Image:PayM285.jpg|thumb|none|500px|In this wonderful close-up you can read even the Beretta and S&W marks.]]
[[Image:PayM286.jpg|thumb|none|500px|Porter uses his Model 28 in combination with his Beretta to shoot up the Chinese mobsters through the back of the car]]
[[Image:PayM287.jpg|thumb|none|500px|Porter shoots through the bottom of the car at the gangsters]]
[[Image:PayM288.jpg|thumb|none|500px|Close up of the muzzle flash from Porter's Model 28]]
[[Image:PayM289.jpg|thumb|none|500px|Another shot of Porter showering bullets through the back of the gangsters' car]]
[[Image:PayM2810.jpg|thumb|none|500px|Porter is going to kill Pearl before discovering his revolver is empty.]]
[[Image:PayM2811.jpg|thumb|none|500px]]
[[Image:PayM2812.jpg|thumb|none|500px|Det. Hicks ([[Bill Duke]]) shows is S&W to Porter.]]
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.
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.