These AR-platform uppers are specifically engineered for varmint hunting. Each sports a 416 HBAR fluted stainless steel 24" barrel in a rifle-length free-floating tube. Railed upper receiver for optics. .750 microgas block. Complete bolt carrier and assembly. The 5.56/.223 barrel has a 1-in-8" rate of twist and the .204 barrel twist is 1-in-12". Both weigh 6 lbs. Available: