Deacon (Peter Greene) carries a nickel-plated Beretta 84F, which he uses to betray Miles Logan (Martin Lawrence) and the rest of the diamond heist crew early in the movie. It's seen again in the end when he and Logan confront each other.
A Remington 870 is used by one of the LAPD officers who comes in during the diamond heist. It is fitted with a tactical light. A pistol-gripped Remington 870 is also used by one of the drug traffickers during the van bust.
While he is impersonating a detective, Miles Logan (Martin Lawrence) carries the LAPD standard-issue Beretta 92FS in 9x19mm as his sidearm. He only uses it however, during the convenience store robbery. The uniformed LAPD officers throughout the movie also carry the Beretta.
Detective Carlson (Luke Wilson) carries a Smith & Wesson 4506-1 in .45 ACP as his sidearm throughout the film. He notably uses it during the convenience store shootout, and during the drug raid at Jean Le Fleur's (Olek Krupa)'s warehouse. Det. Hardcastle (William Forsythe) also carries a Smith & Wesson 4506 as his sidearm and uses it throughout the course of the film.
Tulley (Dave Chappelle) uses an RPB M11, a semi-auto MAC-11 clone, as his weapon during the convenience store robbery and standoff in the alley that follows. Although the folly editor occasionally inserts bursts of automatic gunfire on the soundtrack whenever the weapon is fired, it is clear whenever the weapon is fired that it is in fact a semi-auto civilian "assault pistol" version of the MAC-11. The henchman Francois (Erik Rondell) also carries a version of this weapon in the later half of the film.
The Clerk in the convenience store (Kenny Endoso) draws and fires a Remington 1100 sawed-off just after he has run out of ammunition in his Colt Detective Special.
Deacon (Peter Greene) carries a Browning Hi-Power of newer manufacture when he tries to interfere in Miles Logan's sting operation to get back the diamond.
Jean LaFleur (Olek Krupa) passes a stainless Ruger GP100 off to Miles Logan (Martin Lawrence) when he is trying to find out if he is an undercover cop. Logan keeps the GP100 and uses it in the film's climax when he finally confronts Deacon (Peter Greene).
Most of Jean LaFleur's (Olek Krupa's) thugs are armed with Heckler & Koch MP5K submachine guns fitted with extended barrels when they meet Logan, working undercover as a drug trafficker. These are not MP5K-PDWs as stated previously; they do not have the PDW folding stock.
Jean LaFleur's thug (stuntman John Meier) welds a Beretta PM12S submachine gun and attempts to shoot Carlson with it. Miles Logan pushes Carlson out of the way, who then rolls onto his back and empties his S&W 4506 into the thug.
When Deacon (Peter Greene) steals an armored car and attempts to escape at the end of the film, he finds a 2nd Generation Glock 17 lying on the seat. He uses it to confront Miles Logan at the end of the movie, but never uses it, as Miles talks him into surrendering. One of the drug traffickers in the truck during the bust also uses a Glock 17.
LAPD SWAT officers, U.S. Customs agents, and Mexican border patrol officers all use M16A2 assault rifles. The rifles are seen most clearly when Deacon (Peter Greene) drives his armored car across the border into Mexico and the Customs agents and Mexican officers all open fire upon him. Much like the aforementioned firearms, some of the M16A2s are fired on semi-auto (with the foley editor simply inserting automatic fire onto the soundtrack, which seems to be a common goof in the movie) however, some of the other rifles are fired in automatic three-round bursts.
Error creating thumbnail: File missingM16A2 - 5.56x45mmError creating thumbnail: File missingA Customs agent fires an M16A2 at the armored car. A marked three position fire-selector is visible on the receiver.Error creating thumbnail: File missingTwo Mexican border patrol officers raise their M16A2s and prepare to fire at Deacon. The one on the left has an M16A1-style forward assist, which means that the upper receiver probably came from an earlier-model civilian AR-15A2. The three-position fire selector is also (more clearly) visible on this rifle.Error creating thumbnail: File missingOne of the Mexican officers fires his M16A2 at the armored car.
Heckler & Koch MP5A2
Several LAPD SWAT operators and U.S. Customs officers are seen using Heckler & Koch MP5A2 submachine guns near the end of the film.
During the scene where LAPD SWAT and FBI HRT arrest LaFleur and his men, it appears that at least one operator is armed with an M16 carbine variant with a grenade launcher. It appears to be an M4A1 fitted with a Cobray CM203 37mm flare launcher (meant to stand in for the M203), but this is far from certain.
