This specific designation refers to a variant of the Colt AR-15 rifle designed for competitive target shooting. It typically features a heavy barrel (HBAR) for increased accuracy and reduced recoil, along with other features tailored for precision shooting, such as adjustable sights or a flat-top receiver for mounting optics. These rifles are often chambered in .223 Remington or 5.56 NATO.
The heavy barrel profile provides greater thermal stability, minimizing the impact of barrel heating on shot placement during extended shooting sessions. This makes the rifle particularly well-suited for competitive disciplines where consistent accuracy is paramount. Historically, these rifles played a role in the popularization of competitive rifle shooting, offering an accessible platform for both seasoned marksmen and aspiring competitors. The emphasis on accuracy and stability has also led to their adoption by some law enforcement and military units for specialized roles.
