The M&P15 VTAC is a collaboration between S&W and Viking Tactics, featuring the VTAC handguard, Geissele trigger, and Viking Tactics sling swivel from the factory. The VTAC handguard is a slimmer rail system than the standard quad-rail, reducing weight while retaining accessory mounting capability. The factory Geissele trigger was a significant differentiator — a premium aftermarket trigger included at production. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2010, USA Weight: 6.8 oz Overall length: 35" Status: Discontinued Intended use: Tactical, Law Enforcement