ATI 15MS556MLP3P: This fantastic Milsport Tactical AR-15 from American Tactical Imports features a 10\" M-LOK rail as well as a collapsible stock. This model features a 16\" barrel that is incredibly accurate. The optics ready upper is ready for a scope, red dot, or precision sights of your choice. Ships with one 30-Round Magazine, a cable lock, and owner\'s manual.Note - The Milsport designation from ATI incorporates the traditional forged aluminum receiver on the rifle as opposed to the reinforced polymer receivers used in their OmniMax designation. This is a Milsport forged aluminum receiver rifle.