All Mossberg 940 Pro Waterfowl shotguns now come optic-ready, with patent-pending receiver cuts that accept direct mounting of Shield RMSc-pattern micro dot sights, for improved eye alignment and target aquisition. Inside, you will find a host of corrosion-resistant internal parts- including a boron-nitride coated gas piston, magazine tube, and hammer and sear- for improved performance in the blind, in the pit, or while traversing upland fields. For additional protection, our 940 Pro Waterfowl models feature a coated return spring tube, chrome-lined chambers and bores, and a stainless steel return spring to help when facing wet, unforgiving conditions.FeaturesOptics Ready with Cover PlateRMSc FootprintQuick-Empty Magazine ReleaseAdjustable Length of Pull (13"-14.25")Self-Draining StockHIVIZ CompSight Fiber Optic Bead