The Rock River Arms LAR-15 Wylde Match is chambered in .223 Wylde, a hybrid chamber that accepts both .223 Remington and 5.56 NATO ammunition while providing the tighter leade of a .223 match chamber for improved accuracy. Features a 20-inch stainless steel barrel, free-float handguard, and RRA two-stage trigger. The Wylde chamber was adopted by RRA as the standard for their match-grade barrel offerings. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2014, USA Weight: 8.5 oz Overall length: 40" Status: Active Intended use: Precision Shooting, Competition