The DPMS Panther Bull 20 is a 20-inch heavy barrel precision AR-15 with a full-diameter bull barrel profile, free-float aluminum tube handguard, and flat-top upper. The 20-inch bull barrel provides maximum rigidity without the extreme length of the 24-inch variant. Optimized for target shooting and varmint hunting at distances where barrel stiffness translates directly to improved consistency. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2000, USA Weight: 9.2 oz Overall length: 40" Status: Discontinued Intended use: Precision Shooting, Hunting