Magpul’s New PMAG 30 AR 300 B Gen M3 Mags for 300BLK

    Just in time for SHOT Show 2017 Magpul just announced another new product right after their debut of their new X-22 Backpacker Stock, this time they unveiled their new PMAG 30 AR 300 B Gen M3 Mags for the 300 BLK cartridge. Why would Magpul release a 300 BLK specific mag when you can use 5.56 mags with 300 BLK? While you can use 5.56 mags with 300 BLK ammo some mags have feeding issues when using some of the various 300 BLK bullet weights and profiles. These new PMAGS should help alleviate this.

    Along with the same features as Magpul’s other Gen M3 mags the new PMAG AR 300 B Gen M3 mags have an “optimized internal geometry” that works with the various bullet profiles used with 300 BLK ammo. The new Magpul 300 BLK PMAGs also have a distinct rib design that gives shooters a “visual and tactile difference” from any other PMAG to help prevent accidentally shooting a 300 BLK round in a rifle chambered for 5.56, which I think is a pretty neat feature. Shooting a 300 BLK round in a 5.56 rifle¬†has happened before, it’s more common than you think actually.¬†The new PMAGs for 300 BLK will be available around Spring 2017 and should retail for $15.95. Check out for more info.



    Ray I.

    Long time gun enthusiast, Sci-Fi nerd, Whiskey drinker, online marketer and blogger. My daily firearms musings can be found over at my gun blog and Instagram.

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