Spikes Tactical Havoc in .300 Blackout with 16-inch barrel, Magpul MOE furniture package, and Spikes enhanced trigger. The .300 BLK Havoc shares the same Spikes receiver quality as the 5.56 version with barrel and bolt swapped for .300 BLK, making it the premium tier of Spikes's .300 BLK line. Type: Rifle Action: Semi-Automatic Caliber: .300 BLK Capacity: 30 Year introduced: 2015, USA Weight: 102 oz Overall length: 32.5" Status: Active Intended use: Hunting, Suppressed Shooting, Tactical