The M&P15 Optics Ready 8 is an updated optics-ready AR-15 featuring an 8-position adjustable stock, M-LOK free-float handguard, 16-inch barrel, and direct-impingement gas system. The 8-position stock provides a wider range of length of pull adjustment than standard 6-position stocks. Factory-configured for the optics-focused buyer with a full-length free-float top rail. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2020, USA Weight: 6.6 oz Overall length: 35" Status: Active Intended use: Sport Shooting, Tactical