The rifle features a dimpled, 18" barrel; mid-length gas system; DPMS Panther Arms 15" M-Lok free-float rail; low profile adjustable click detent 3 position gas block; A2-style muzzle device. The gas system is enhanced with a Nitrided gas tube in order to better resist high heat and corrosion; aluminum Receiver; Panther Polished Trigger (PPT); black B5 Systems adjustable Bravo Stock and a Panther Custom Over-Molded Grip. Includes an aluminum charging handle and 20rd Magpul PMAG.Caliber 308 WinBarrel Length Range 18" to 18.99"Operating System GasStock Finish Group BlackCapacity 20+1Stock Material PolymerSights NoneBarrel Finish Black NitrideBarrel Material Chrome Moly VanadiumMuzzle A2 Flash HiderTwist 1:10"Receiver Description Picatinny RailMagazine Type Magpul PMAGGrips Panther Custom OvermoldedHandguards M-LOKReceiver Material AluminumStock Description B5 Bravo TelescopingBarrel Description A2 ProfileBarrel Length 18"Max Capacity 20Receiver Finish Black Hardcoat AnodizeStock Finish Black