Great condition, one 30rnd colt mag, large pin receiver with captive pivot pin. A2 receiver The Colt Sporter is an AR-pattern semiautomatic rifle chambered in 5.56x45mm NATO. The Sporter designation was used on Colt rifles marketed for the civilian market, and these rifles are part of the broader development of the AR-15 platform. This configuration has a 20-inch barrel and a 30-round magazine, giving it the traditional full-length profile associated with early AR-style rifles. The platform is known for its modular design, allowing different configurations of components and accessories while retaining the basic operating layout of the AR-15 family.