Colt M16A2

The M16 rifle was the favored weapon for most of Jurassic Park's rangers, feeders and workers and possibly the standard issue weapon for any park personell and staff working directly with dangerous dinosaurs such as the Velociraptors. Robert Muldoon, the park's game warden probably chose the weapon to arm the park ranger's and personell with due to it having good firepower which would prove useful in the event that a dangerous dinosaur escaped it's enclosure and lethal force was needed. Although Muldoon himself preferred the Franchi SPAS-12 as his personal weapon of choice, he armed most of the park's rangers and workers with the M16 especially during dangerous operations such as transferring the raptors to their holding pen. Muldoon himself kept a large armory which was well stocked with M16's as well as SPAS 12's at key points in and around Jurassic Park's compounds such as the emergency bunkers in the event of an emergency.