
James Holmes used 3 different kinds of guns during his killing spree inside a Colorado movie theater on Friday.
According to the Aurora police department, Holmes was in possession of an AR-15, a Remington 870 shotgun and a 40 caliber glock handgun when he was arrested this morning.
An AR-15 is a semi-automatic weapon, which is capable of firing off hundreds of rounds per minute. Take a look at the video below of an AR-15 in action.
(Via TMZ)





