Product Description The Samson Manufacturing +1 Magazine Extension is built to increase capacity and improve handling for Smith & Wesson M&P Shield 9 and M&P Shield 9 M2.0 factory magazines. Designed to help clear malfunctions, it features relief cuts for easier magazine extraction and a contoured leading edge that supports one-handed reloads while providing an ergonomic finger groove. Constructed from 6061-T6 aluminum with a durable black hardcoat anodized finish, this extension is engineered to drop free cleanly and uses the factory magazine spring for reliable feeding. Product Highlights Adds +1 round capacity to compatible S&W M&P Shield 9 / Shield 9 M2.0 factory magazines 6061-T6 aluminum construction with black hardcoat anodized finish for durability and corrosion resistance Contoured leading edge supports smoother one-handed reloads and doubles as a finger groove Relief cuts aid magazine extraction to help clear malfunctions Designed to use the factory magazine spring with a replacement base plate retainer for positive feeding Specs Brand: Samson Manufacturer Part Number: 040603201 UPC: 855016007952 Product Type: Magazine extension / base pad (+1) Material: 6061-T6 aluminum Finish: Black hardcoat anodized (Type III) Compatibility: S&W M&P Shield 9 and M&P Shield 9 M2.0 factory 7- and 8-round magazines Spring: Uses factory magazine spring Dimensions (L x W x H): 1.66 in x 0.98 in x 0.62 in Weight: 0.5 oz Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.