Doublestar (tagine: Be Victorious) is a smaller manufacturer of these, what are called, "black" rifles. (ArmaLite and Colt are two of the bigger AR-15 names). Reportedly, James Holmes' jammed (probably because of the 100-round magazine). Otherwise, another dozen or more people might have been killed in Aurora.
"We shoot what we sell...We build what we shoot."
(O...K, I guess that makes sense)