Product Description The Agency Arms Sage Dynamics x Agency Arms G17 9mm +5 base pad is built to increase the capacity and handling performance of 17-round Glock 17 magazines. Machined from durable 6061 aluminum and finished in anodized OD green, this magazine extension delivers a rugged upgrade for range use, training, and duty-oriented setups. It features Sage Dynamics engraving, a dot matrix panel for easy marking, and an extended ledge that supports one-handed manipulations. This base pad includes a chrome silicon alloy spring and is specifically designed for 17-round magazines only. It is not compatible with reduced capacity magazines. Product Highlights Machined from 6061 aluminum for strength, durability, and long-term reliability Anodized OD green finish with Sage Dynamics engraving for a distinctive premium look Increases capacity by 5 rounds in 9mm magazines and 4 rounds in .40 S&W and .357 magazines Extended ledge aids one-handed manipulations and improved control during reloads Includes chrome silicon alloy spring and dot matrix panel for magazine identification Specs Product Type: Magazine extension base pad Compatibility: Glock 17 17-round magazines Not Compatible With: Reduced capacity magazines Capacity Increase: +5 rounds (9mm), +4 rounds (.40 S&W & .357) Material: 6061 aluminum Finish: Anodized OD Green Engraving: Sage Dynamics Marking Feature: Dot matrix panel Spring Material: Chrome silicon alloy Country of Manufacture: USA UPC: 000000000000 Manufacturer Part Number: BP-G17-SAGE Brand: Agency Arms 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.