Magpul PMAG 30 AR 300 B Gen M3 Rifle Magazine Black .300 Blackout 30/rd

The Magpul PMAG 30 AR 300 B Gen M3 Rifle Magazine is a purpose-built feeding solution engineered specifically for .300 Blackout rifles. This magazine holds 30 rounds, ensuring reliable performance for shooters using .300 BLK ammunition. It is designed to eliminate compatibility issues often faced with magazines intended for 5.56 NATO cartridges.

Built to Magpul's Gen M3 specifications, this magazine features aggressive feed lips optimized for the larger diameter of .300 Blackout rounds. The reinforced polymer construction ensures durability against field abuse, temperature changes, and repeated loading cycles without loss of spring tension. This is particularly critical for suppressed fire, where bolt velocity can vary significantly.

Whether you're using a dedicated upper, SBR, or precision rifle platform, this magazine fits standard AR lower magwells without modification while maintaining its full 30-round count. The witness holes allow for quick round-count verification, and the removable, self-lubricating follower reduces friction for smooth extraction under pressure. This magazine is ideal for law enforcement precision rifle teams and civilian shooters alike, ensuring consistent performance across various shooting scenarios.