M&P 15 configuration produced to meet military-adjacent specifications: chrome-lined barrel and chamber, 1:7 twist for compatibility with M855 and M856 ammunition, A2 flash hider, and forged upper and lower. The most mil-spec-adjacent production M&P 15. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 30 Year introduced: 2008, USA Weight: 26.5 oz Overall length: 35" Status: Active Intended use: Duty / Service, Law Enforcement