Product Description The Strike Industries Aluminum Extended Magazine Plate for SIG SAUER P320 (9mm) is designed to fit SIG SAUER P320 21-, 17-, and 15-round magazines while adding up to +5 rounds of 9mm capacity. Machined from durable 6061-T6 aluminum, this extended base plate features a slim, low-drag, no-snag profile for smooth handling and improved performance. Built with competitive use in mind, its overall size is intended to comply with USPSA dimensional requirements. Product Highlights Adds up to +5 rounds of 9mm capacity to compatible SIG SAUER P320 magazines Precision-machined 6061-T6 aluminum construction for strength and longevity Slim, low-drag, no-snag profile designed for fast, clean reloads Fits 21-, 17-, and 15-round SIG SAUER P320 9mm magazines Designed with USPSA dimensional compliance in mind for competitive shooting Specs Brand: Strike Manufacturer Part Number: EMPALP320BK UPC: 793811766578 Product Type: Extended magazine base plate / magazine extension baseplate Compatibility: SIG SAUER P320 9mm magazines (21-, 17-, and 15-round) Caliber: 9mm (9x19) Capacity Increase: +5 rounds (9mm) Material: 6061-T6 aluminum Color/Finish: Black Weight: 1.97 oz Dimensions: 1.4 in (L) x 1.15 in (W) x 1.4 in (H) 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.