The Radical Firearms RF-15 is a Texas-made budget AR-15 competing in the entry-level market with a 16-inch barrel and free-float handguard as standard. Radical Firearms differentiates from PSA by including a free-float rail on base models. Type: Semi-Auto Rifle Action: Direct Impingement Caliber: 5.56x45mm Capacity: 30 Year introduced: 2011, USA Weight: 6.6 oz Overall length: 32.5" Status: Active Intended use: Home Defense, Range, Training