The Rock River Arms LAR-15 National Match A4 is RRA's competition-grade AR-15 built for NRA High Power and Service Rifle competition. Features a 20-inch stainless steel Wilson Arms barrel, two-stage National Match trigger, free-float handguard, and adjustable A2 buttstock. Factory-tuned for the accuracy requirements of 200, 300, and 600 yard High Power competition. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2005, USA Weight: 8.8 oz Overall length: 40" Status: Active Intended use: Precision Shooting, Sport Shooting