--- title: "Magpul Pmag 20Rd 300Blk Gen M3 Magazine" description: "20-round magazine for .300 Blackout rifles with a compact Gen M3 design. Includes ribbed texture, impact resistant polymer, dot matrix, and cover." canonical_url: "https://www.kygunco.com/product/magpul-mag1182-blk-pmag-20rd-ar-300blk-gen-m3-black" meta: author: KYGUNCO "og:description": "20-round magazine for .300 Blackout rifles with a compact Gen M3 design. Includes ribbed texture, impact resistant polymer, dot matrix, and cover." "og:image": "https://cdn.kygunco.com/assets/products/159339/thumbnail.jpg?v=1713453983" "og:image:height": "500" "og:image:width": "500" "og:title": "Magpul Pmag 20Rd 300Blk Gen M3 Magazine" --- > 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) / [Rifle Magazines](https://www.kygunco.com/category/shooting/gun-parts/magazines/rifle-magazines) / MGP-MAG1182-BLK ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/159339/main.jpg?v=1713453983) For illustration purposes only, this image may not be an exact representation of the product. # MAGPUL PMag 20rd AR 300Blk Gen M3 Black Purpose-built 20-round magazine for rifles chambered in .300 Blackout. The compact Gen M3 design offers a shorter profile for easier handling and includes a distinct ribbed body, smoother upper-half texture, impact and crush resistant polymer, paint pen dot matrix, and a removable slim floor plate. $12.99 Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Item # 159339 Style MGP-MAG1182-BLK UPC 840815132233 Condition New Manufacturer [Magpul](https://www.kygunco.com/brand/magpul) Weight 1 lb ### Magpul PMag 20rd AR 300Blk Gen M3 Black The PMAG 20 AR 300 B GEN M3 is a purpose-built magazine for rifles chambered in .300 Blackout® (300 BLK). Similar in every way to our PMAG 30 AR 300 B, the PMAG 20 is more compact for increased maneuverability and creates a more concealable package for use in small format firearms. Since its inception, 300 BLK shooters have had to use a magazine designed for another cartridge, limiting that round's ultimate performance and compatibility. One of the key features of 300 BLK in the past has been its compatibility with 5.56x45mm magazines. However, even with moderate success with that particular magazine, it is a compromise to do so, with reliability and safety both being at risk. In addition to the performance gained by a dedicated mag, the PMAG 20 AR 300 B also offers a safer way to feed your 300 BLK rifle. When using 5.56x45mm mags, the potential to chamber and fire a 300 BLK round in a 5.56x45mm rifle with catastrophic results requires diligent ammunition management by the shooter. The PMAG 20 AR 300 B's distinct ribbed design and smoother upper-half texture provides the shooter a distinct visual and tactile difference from any other PMAG to mitigate dangerous cross-loading issues. Made in the USA. **SPECIFICATIONS** - Caliber .300 AAC Blackout - Platform AR15, M4, M16 - Capacity 20 rds - Compatibility Wide compatibility with most 'STANAG 4179' platforms such as the AR15/M4, FN SCAR, IWI Tavor, and others ** 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). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Magpul ```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/magpul-mag1182-blk-pmag-20rd-ar-300blk-gen-m3-black#webpage","@type":"WebPage","description":"20-round magazine for .300 Blackout rifles with a compact Gen M3 design. 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