Jurassic Park is the 1993 feature film adaptation of the Michael Crichton bestseller of the same name. Directed by Steven Spielberg, the film is set in a state-of-the-art amusement park where dinosaurs have been genetically brought back to life. After a computer malfunction, the dinosaurs now become a threat to those remaining on the island. The film was a huge success, surpassing Spielberg's own E.T. to become the highest grossing film of all time until 1997's Titanic. The film would subsequently be followed by several sequels: 1997's The Lost World: Jurassic Park, 2001's Jurassic Park III, 2015's Jurassic World and 2018's Jurassic World: Fallen Kingdom.
The following weapons were used in the film Jurassic Park:
Franchi SPAS-12s are used by Robert Muldoon (Bob Peck) and Dr. Alan Grant (Sam Neill) over the course of the movie, also seen in the hands of several InGen workers in the introduction and in the gun lockers. It is last seen lying discarded on the computer room floor after jamming due to a stovepipe malfunction when Grant used it to try to fend off an attacking Velociraptor.
The M16A2 is seen carried by several InGen workers in the beginning of the film and is stored in the gun lockers in the emergency bunker. Most of the M16A2's carried by the workers can be seen fitted with weaponlights mounted on the barrels ahead of the front sights.
Heckler & Koch HK91A2
A couple of Heckler & Koch HK91A2s can be seen briefly inside the gun locker, from which Muldoon grabs a SPAS-12.
Some of the InGen workers are also seen with 'slab-side' M16 Rifles, or possible AR-15/SP1s. Then again, they could be simple rubber props modeled after said rifles. They are fitted with A2-style handguards to pass for an M16A2.