Magpul PMAG 30 AR 300 B GEN M3 — .300 Blackout, 30-Round

Built for .300 Blackout rather than adapted to it — the follower and geometry are tuned for the fatter round, and the body is ribbed and marked so it never ends up in the wrong rifle on the wrong day. If you run a Blackout upper, use these.

• Caliber: .300 AAC Blackout
• Capacity: 30 rounds
• Material: Black polymer
• Fits: AR-15 pattern rifles

Order online, or call the shop if you’d rather talk it through.

Capacity and state law: We ship only what the law in your state allows. Orders we can’t legally ship are cancelled and may be subject to a restocking fee — see our Terms & Conditions. Know what you can have before you order.