The Beretta 92 is a series of semi-automatic 9mm pistols designed and manufactured by Beretta of Italy, introduced in 1975. It is the primary weapon of Martin Riggs.
In Lethal Weapon, his police issued sidearm was his Beretta 92F. In Lethal Weapon 2 and beyond, his sidearm is a Beretta 92FS. Riggs has killed more people with this type of weapon than any other character in the series.
In a director's cut scene, Martin Riggs draws his gun on the school sniper. He shoots about 6-7 times, ending the shooting.
Riggs later takes out the gun out of his pocket in front of the drug dealers revealing his true intentions for being with them. He takes out the sniper hiding behind the Christmas trees before wounding one of the drug dealers. While pursuing the other, the conscious drug dealer takes his Beretta 92F and he surrenders him at gun point.
Riggs uses his gun again when the pimp they were trying to question was about to kill Roger Murtaugh. He whacks the gun out of his hand then shoots him three times as he falls into the pool.
In the climactic scene where Martin Riggs defeats Joshua, a tired and exhausted Riggs, together with Murtaugh, pulls out his Beretta 92F to kill Joshua before his own life would be taken.
In the sequel, Martin Riggs ditches his 92F in favor of the more improved and advanced Beretta 92FS.
During a sneak in visit to Arjen Rudd's office, Riggs plays "Eeny, meeny, miny, moe" with him and his henchmen, pointing his pistol at every one of them but shoots his fish tank instead to scare him.
Following an attempted murder on Riggs at his trailer, he brings out his Beretta and takes aim on two of Rudd's masked henchmen while on ground. He would later use it again on a raid aboard the Alba Varden cargo ship killing henchmen before confronting Pieter Vordstedt.
Martin Riggs has equipped his Beretta pistol with a laser aim pointer. This comes in handy in certain scenes of the film. When a barge carrying illegal Chinese immigrants passes by, Riggs boards it and goes to check what the noise was up there. Encountering a triad gang member, he tries shooting him but misses every time. Using the recently upgraded laser accessory of his pistol, Riggs aims it at a deflectable piece of metal and hits him in the rear, then fatally shoots his chest.
He later uses his gun when he aims the laser at one of Uncle Benny Chan's henchmen and distracts him from hurting anyone. Then, in a struggle with Wah Sing Ku, he dismantles the slide of Riggs' Beretta rendering it useless.