Spikes Tactical Havoc with 16-inch chrome-lined barrel and Spikes enhanced furniture package. The Havoc configuration includes a Magpul MOE stock, Hogue grip, and free-float handguard as a factory-installed upgrade over the baseline ST15. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2013, USA Weight: 103 oz Overall length: 33" Status: Active Intended use: Tactical, Sport Shooting, Home Defense