Smith & Wesson Shield 9mm Magazines (fits both Shield 1.0 & 2.0) - crafted from premium American miled stainless and high carbon steel, ensuring top-notch quality and strength. Each tube undergoes through-hardening, providing unparallelled durability. Checkmate has meticulously polished both the inside and the outside of the tubes to eliminate any drag during use.These magazines boast an anti-friction, self-lubricating polymer for exceptional feed and function. Additionally, the follower is engineered with precise dimple placement, guaranteeing exceptional feeding and functionRemovable High-Impact Polymer Basepad+10% Power SpringsLow Drag Polymer FollowerLifetime Warranty