Magpul PMAG 20 AR 300 B Gen M3 Rifle Magazine 300 AAC BLK 20/rd

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