Magpul PMAG 30 AR 300 B GEN M3 (MAG800) .300 BLK 30-Round Magazines (10 Pack)
This lot includes ten Magpul PMAG 30 AR 300 B GEN M3 magazines purpose-built for .300 AAC Blackout (7.62x35mm). The modified internal geometry is designed to feed the wide range of .300 BLK projectile weights and profiles more consistently than standard 5.56 magazines.
Distinct external ribbing and a unique upper-body texture help differentiate these from 5.56 NATO PMAGs. GEN M3 construction features impact- and crush-resistant polymer, an easily removable floorplate for maintenance, and a paint-pen dot matrix for marking and identification.