Product Description The Warne Magazine Extension enhances your Glock 17 or Glock 22 factory magazine with a durable, ergonomic basepad designed for reliable handling and improved manipulation. Machined from 6061-T6 aluminum and finished in a hardcoat anodized Flat Dark Earth, it adds capacity while maintaining a comfortable profile with finger grooves for positive control. The extension&';s shape supports smoother insertion and makes it easier to strip the magazine from the handgun when needed. Product Highlights Fits Glock 17 and Glock 22 original factory magazines for 9mm Luger and .40 S&W use Adds +5 rounds with 9mm Luger magazines or +4 rounds with .40 S&W magazines 6061-T6 aluminum construction with hardcoat anodized Flat Dark Earth finish for durability Ergonomic basepad with finger grooves to aid insertion and allow magazine stripping if needed Includes extension and a new spring (magazine not included) Specs Brand: Warne Manufacturer Part Number: 3113 UPC: 656813107650 Product Type: Handgun magazine extension / basepad Compatibility: Glock 17 / Glock 22 factory magazines Caliber Compatibility: 9mm Luger, .40 S&W Capacity Increase: +5 (9mm), +4 (.40 S&W) Material: 6061-T6 aluminum Finish/Color: Hardcoat anodized Flat Dark Earth (FDE) Included: Extension and new spring Competition Note: Meets USPSA 141.25mm legal length Country of Manufacture: USA Weight: 0.1 lb 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.