The Spikes Tactical ST-15 LE is a law enforcement configured AR-15 with a chrome-lined barrel, enhanced trigger, and M4 feed ramps, marketed to police departments and security contractors. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2008, USA Weight: 62 oz Overall length: 32" Status: Active Intended use: Tactical