The Wilson Combat® 1911 Elite Tactical Sentinel® 9mm 8-Round Magazine with Pad, compatible with 9mm Sentinel 1911 pistols, features a welded stainless steel body with a polymer base pad for lasting shock and corrosion resistance in adverse conditions. Factory-machined witness slots make for easy visual round counts, while a proprietary multi-step tumbling and finishing process delivers exceptionally smooth operation for enhanced reliability in adverse environments.