18 Contoured BBL 3 Chamber 5+1 Mobil, Full, Modified, Improved Choke Black Anodized Finish 7075 Aluminum Black Synthetic Stock Fixed Thumb Hole Stock Flip Up Front and Rear Adjustable Sights
20 Fluted Barrel Shroud 3 Chamber F, M, IC Choke Anodized Black Fixed/Featureless Synthetic Stock Flip Up Front and Rear Adjustable Sight State Compliant Model