AR15 assault rifles are regarded as highly versatile and are best suited for modern day use. On average, an AR 15 assault rifle in 2011 costs $1,200. The prices may differ from one manufacturer to another and also depending on the seller. Their varying models and accessories also influence the cost. A used AR 15 costs not more than half the price of a brand new rifle. An AR15 assault rifle has immense power and shoots targets with accuracy. However, it is based on one’s needs that a particular type is selected. The most popular type is the Bushmaker that comes with a shorter barrel. Other reputed manufacturers include Colt and dpms. Olympics Arms and Stag Arms are lesser-known AR 15 rifles but are quite efficient and useful. Rock River Arms is a standard AR type.