Product Description The Warne Handgun Magazine Extension for Glock 17/22 is a rugged, ergonomic base pad designed to increase capacity while improving handling during reloads. Machined from 6061-T6 aluminum billet and protected with a Type II hardcoat anodized finish, this extension is built for excellent abrasion and corrosion resistance. The contoured shape helps guide consistent magazine insertion, and integrated finger grooves provide added purchase so the magazine can be stripped free if needed. A Torx head screw and washer provide secure retention for dependable use. Product Highlights Compatible with Glock 17 and Glock 22 factory magazines Increases capacity by +3 rounds (9mm) / +2 rounds (.40 S&W) in this model 6061-T6 aluminum billet construction for strength with low weight Type II hardcoat anodized finish for abrasion and corrosion resistance Ergonomic profile with finger grooves for positive handling and easier magazine stripping Specs Brand: Warne Product Type: Handgun magazine extension / extended magazine base pad Compatibility: Glock 17, Glock 22 Capacity Increase: +3 (9mm) / +2 (.40 S&W) Color: Black Material: 6061-T6 aluminum billet Finish: Type II hardcoat anodized Retention Hardware: Torx head screw and washer Country of Manufacture: USA Manufacturer Part Number: 3106 UPC: 656813107582 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.