The Patriot Ordnance Factory Revolution DI (Direct Impingement) is a semi-auto rifle chambered in .308 Win and 7.62 NATO, featuring a 16.5-inch barrel. It comes equipped with a 20+1 capacity and a black hard coat anodized finish.Key FeaturesBarrel Length: Features a 16.5-inch match-grade chrome-moly barrel with 5R button rifling for enhanced accuracy.Adjustable Gas Block: Includes a 9-position adjustable Dictator gas block for tuning the rifle's operating speed.Safety: Equipped with a thumb safety for secure operation.Included Magazines: Ships with one 20-round Magpul PMAG.Sights: Optic ready for easy mounting of optics.