Product Description The Shield Arms D-Series DS20 magazine is a high-capacity 20-round magazine designed to fit Glock 17-size frames with a flush-fit profile. Built for reliable feeding and long service life, it features a durable black nitrocarburized finish, heat-treated construction, and reinforced components for consistent performance. Designed to work with Glock pistols and Gen 3 clones, it is also compatible with Shield Arms magwells for an optimized setup. Product Highlights 20-round 9mm Luger capacity with a flush fit in Glock 17-size frames Black nitrocarburized finish for enhanced wear and corrosion resistance Heat treated (rated RHC 45-50) for strength and durability Over-insertion tabs help protect the magazine and firearm during reloads Custom high-impact nylon components engineered for smooth, reliable feeding Specs Brand: Shield Arms Series: D-Series Model: DS20 Caliber: 9mm Luger Capacity: 20 rounds Fit/Compatibility: Glock 17 (flush fit with 17-size frames); works with Glock pistols and Gen 3 clones Finish: Black nitrocarburized (nitride) Features: Over-insertion tabs; custom high-impact nylon components; compatible with Shield Arms magwells UPC: 810159261821 Manufacturer Part Number: DS20NC 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 products manufacturer.