--- title: "Sig Sauer P320 21-Rd Magazine Coyote Brown" description: "21-round extended 9mm magazine for P320-M17/M18 and compatible full-size P320 pistols. Steel double-stack body with polymer baseplate and side witness holes." canonical_url: "https://www.kygunco.com/product/sig-sauer-mag-mod-f-9-21-coy-p320-m17-9mm-full-21rd-coyote-magazine" meta: author: KYGUNCO "og:description": "21-round extended 9mm magazine for P320-M17/M18 and compatible full-size P320 pistols. Steel double-stack body with polymer baseplate and side witness holes." "og:image": "https://cdn.kygunco.com/assets/products/138842/thumbnail.jpg?v=1765574325" "og:image:height": "500" "og:image:width": "500" "og:title": "Sig Sauer P320 21-Rd Magazine Coyote Brown" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Magazines](https://www.kygunco.com/category/shooting/gun-parts/magazines) / [Handgun Magazines](https://www.kygunco.com/category/shooting/gun-parts/magazines/handgun-magazines) / SGS-MAG-MOD-F-9-21-COY ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/138842/main.jpg?v=1765574325) For illustration purposes only, this image may not be an exact representation of the product. # SIG SAUER P320-M17/M18 9mm 21rd Magazine Coyote Brown 21-round extended 9mm magazine for SIG SAUER P320-M17/M18 pistols. Compatible with full-size P320 pistols and P211 models with the factory magwell. Features a steel double-stack body, polymer baseplate, side witness holes, and a black magazine body with coyote brown baseplate. 5.0 ** ** ** ** ** [1 review](#reviews) $45.08 ** 4 interest-free payments of **$11.27** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Fulfilled by a partner warehouse. ** Partner Fulfilled Item # 138842 Style MAG-MOD-F-9-21-COY UPC 798681599592 Condition New Manufacturer [Sig Sauer](https://www.kygunco.com/brand/sig-sauer) Round Capacity 21 Caliber 9mm Weight 4 lb 21-round extended magazine designed for the SIG SAUER P320-M17/M18. Compatible with all full-size P320 pistols and P211 models equipped with the factory magwell. SPECIFICATIONS - Model: P320, M17, M18, P211 GTO, P250 - Firearm Type: Pistol - Color: Black & Coyote Brown Baseplate - Magazine Type: Double Stack - Magazine Material: Steel - Baseplate Material: Polymer - Witness Holes: Side Witness Holes - Pistol Size: Full-Size - Pistol Series Size: Carry, Carry X, Full-Size, Full-Size X ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 5.0 ** ** ** ** ** 1 review ** ** ** ** ** 1 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Reviews ** Clarence Pegues Matteson, IL Got this for my new AXG to add more rounds for home defense. Will be getting one more. 2/13/2021 ** ** ** ** ** ## More from Sig Sauer ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/sig-sauer-mag-mod-f-9-21-coy-p320-m17-9mm-full-21rd-coyote-magazine#webpage","@type":"WebPage","description":"21-round extended 9mm magazine for P320-M17/M18 and compatible full-size P320 pistols. 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Will be getting one more.","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2021-02-13T03:54:37.847-05:00","author":{"@type":"Person","name":"Clarence Pegues"},"inLanguage":"en"},"weight":{"@type":"Mass","value":"4 lb"}},{"@id":"https://www.kygunco.com/product/sig-sauer-mag-mod-f-9-21-coy-p320-m17-9mm-full-21rd-coyote-magazine#breadcrumb","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","name":"Home","item":"https://www.kygunco.com","position":1},{"@type":"ListItem","name":"Shooting","item":"https://www.kygunco.com/category/shooting","position":2},{"@type":"ListItem","name":"Gun Parts","item":"https://www.kygunco.com/category/shooting/gun-parts","position":3},{"@type":"ListItem","name":"Magazines","item":"https://www.kygunco.com/category/shooting/gun-parts/magazines","position":4},{"@type":"ListItem","name":"Handgun Magazines","item":"https://www.kygunco.com/category/shooting/gun-parts/magazines/handgun-magazines","position":5},{"@type":"ListItem","name":"SGS-MAG-MOD-F-9-21-COY","position":6}]},{"@id":"https://www.kygunco.com/#/schema/image/1","@type":"ImageObject","contentUrl":"https://cdn.kygunco.com/assets/backdrops/facade.jpg","inLanguage":"en","url":"https://cdn.kygunco.com/assets/backdrops/facade.jpg"}]} ``` ## Sitemap See the full [sitemap](https://www.kygunco.com/sitemap.md) for all pages.