The Spikes Tactical ST-15 in .50 Beowulf uses Spikes' billet upper and lower receiver set with a 16-inch chromoly barrel. Spikes provides a premium-quality alternative between budget producers like BCA and ultra-premium manufacturers like Wilson Combat. Type: Rifle Action: Semi-Automatic Caliber: .50 Beowulf Capacity: 7 Year introduced: 2014, USA Weight: 96 oz Overall length: 34" Status: Active Intended use: Hunting, Home Defense