--- title: "Magpul 300 Blackout PMag 30-Round Gen M3" description: "Dedicated 30-round magazine for rifles chambered in .300 AAC Blackout. Features distinct ribbing, optimized internal geometry, and GEN M3 polymer construction." canonical_url: "https://www.kygunco.com/product/magpul-mag800-blk-pmag-30rd-ar-300-b-gen-m3-300-blk" meta: author: KYGUNCO "og:description": "Dedicated 30-round magazine for rifles chambered in .300 AAC Blackout. Features distinct ribbing, optimized internal geometry, and GEN M3 polymer construction." "og:image": "https://cdn.kygunco.com/assets/products/122215/thumbnail.jpg?v=1713453298" "og:image:height": "500" "og:image:width": "500" "og:title": "Magpul 300 Blackout PMag 30-Round Gen M3" --- > 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-MAG800-BLK ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/122215/main.jpg?v=1713453298) For illustration purposes only, this image may not be an exact representation of the product. # MAGPUL PMag 30rd AR 300 B Gen M3 300 Blk 30-round PMAG magazine designed for rifles chambered in .300 AAC Blackout. It features optimized internal geometry for varied bullet profiles, a distinct rib design and smoother upper-half texture for easier identification, plus GEN M3 features like impact-resistant polymer, a removable slim floor plate, paint pen dot matrix, and a dust/impact cover. 5.0 ** ** ** ** ** [5 reviews](#reviews) $13.99 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 # 122215 Style MGP-MAG800-BLK UPC 840815117223 Condition New Manufacturer [Magpul](https://www.kygunco.com/brand/magpul) Weight 1 lb ### Magpul PMag 30rd AR 300 B Gen M3, 300 Blk The PMAG® 30 AR 300 B GEN M3™ is a purpose-designed magazine for rifles chambered in 300 Blackout®. Since its inception, 300 Blackout shooters have had to use a magazine designed for another cartridge, limiting its ultimate performance and compatibility. One of the nice features of 300 Blackout is the compatibility with 5.56x45mm parts, but with the magazine it is a compromise to do so. Due to the wide variety of projectile weights and profiles potentially decreasing overall reliability, a dedicated 300 Blackout magazine was a logical step for the PMAG line. In addition to the performance gained by a dedicated mag, the PMAG 30 AR 300 B also offers a safer way to feed your 300 Blackout rifle. When using 5.56x45mm mags, the potential to chamber and fire a 300 Blackout round in a 5.56x45mm rifle with catastrophic results requires diligent ammunition management by the shooter. The PMAG 30 AR 300 B's distinct rib 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. Along with optimized 300 Blackout performance, the PMAG 30 AR 300 B brings along all of the GEN M3 features such as next-generation impact and crush resistant polymer, aggressive front and rear texture, an easily removable slim floor plate, a paint pen dot matrix for marking and identification, and a dust/impact cover. - The PMAG 30 AR 300 B's distinct rib design and smoother upper-half texture provides the shooter a distinct visual and tactile difference from any other PMAG - Dedicated, purpose-designed magazine for rifles chambered in 300 Blackout - Optimized internal geometry accommodates the wide variety of bullet profiles used in 300 Blackout cartridges - Carries forward the physical & performance features of the rest of the GEN M3 line **SPECIFICATIONS** - Caliber .300 AAC Blackout - Platform AR15, M4, M16 - Capacity 30 rounds - 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). 5.0 ** ** ** ** ** 5 reviews ** ** ** ** ** 5 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Reviews ** Andrea Hot Springs, AR The mags are as described and I have never had an issue with anything MAGPUL. They work great. 3/13/2023 ** ** ** ** ** ** Robert Jacksonville, NC Super fast shipping and best price on the internet!!! Thank you! 6/21/2022 ** ** ** ** ** ** Jacob Julik Princeton, MN Not much to say other than these are great 1/13/2021 ** ** ** ** ** ** KyGunCo Verified Customer Joliet, IL what else can I say it's a pmag! reliable and durable! 12/12/2018 ** ** ** ** ** ** David Banks Oregon, MO Great Price on these P-Mags 4/14/2018 ** ** ** ** ** ## 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-mag800-blk-pmag-30rd-ar-300-b-gen-m3-300-blk#webpage","@type":"WebPage","description":"Dedicated 30-round magazine for rifles chambered in .300 AAC Blackout. 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They work great.","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2023-03-13T18:36:32.8009554+00:00","author":{"@type":"Person","name":"Andrea"},"inLanguage":"en"},{"@type":"Review","name":"MAGPUL PMag 30rd AR 300 B Gen M3, 300 Blk","reviewBody":"Super fast shipping and best price on the internet!!! 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