The PMAG 30 AR 300 B GEN M3 is a dedicated magazine for rifles chambered in 300 Blackout. While standard AR-15 magazines may be used for this cartridge, the potential danger exists to chamber and fire a 300 Blackout round in a 5.56 NATO chamber with catastrophic results.

Optimized for 300 AAC Blackout, the PMAG 30 AR 300 B retains all the GEN M3 features adding a distinct rib design and smoother upper texture to set them apart from other PMAGs for quick visual and tactile identification. This AR mag is easy to disassemble and clean for regular maintenance and won't fail you in the field.

Dedicated 300 Blackout magazine
Impact and crush resistant polymer construction
Optimized internal geometry for 300 BLK
Anti-tilt, self-lubricating follower
Long life USGI-SPEC stainless steel spring
Over-travel insertion stop
Distinct rib design and smoother upper texture for easy identification
Aggressive front and rear texture
Paint pen dot matrix panels
Flared floorplate
Pop-off impact/dust cover
5 Rounds