The BCM Mod 0 Patrol carbine is one of BCM's earliest production models, establishing the quality benchmark the company would become known for. The 16-inch cold hammer-forged chrome-lined barrel with carbine-length gas system, standard M4 handguards, and mil-spec lower represented a significant quality step above the commercial ARs of the era. Many consider it the starting point of the modern quality AR movement. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2007, USA Weight: 62 oz Overall length: 32.5" Status: Discontinued Intended use: Patrol Rifle, Home Defense