300 Blackout

Now Shipping: 20 Round Magazine - Great for bench or prone shooting.  The PMAG 20 round  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...

PMAG® 30 AR 300 B GEN M3™, 300 BLK MAG800 The PMAG® 30 AR 300 B GEN M3™ is a mission specific magazine for rifles chambered in 300 Blackout®. From the beginning, 300 Blackout shooters have had to use a magazine...