Armalite AR-180
Browning Model BRR
Bushmaster "Shorty" Carbine
Bushmaster "Dissipator" Carbine
Bushmaster "Target" Model Rifle
Bushmaster "V Match Commando" Carbine
Bushmaster "V Match Competition" Rifle
Bushmaster "DCM" Competition Rifle
Bushmaster "A3 Type Shorty" Carbine
Bushmaster "A3 Type Dissipator" Carbine
Bushmaster "A3 Type Target" Rifle
Bushmaster M17S "Bullpup" Rifle
Colt AR-15
IMI Galil
Remington Model 788
Remington Model 722
Remington Model XP-100
http://www.washingtonpost.com/wp-dyn/articles/A42216-2002Oct4.html
I see that Colt AR-15 is on the list so maybe it is an M-16. I don't really know much about weapons.