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Magpul PMAG M3 300BLK 20 Rounds


Out of stock

Category: Product ID: 22074


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Magpul’s PMAG 20 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 20 is more compact for increased maneuverability and creates a more concealable package for use in small format firearms. The PMAG 20 AR 300 B’s distinct ribbed design and smoother upper-half texture provides the shooter a distinct visual and tactile difference from any other PMAG to mitigate dangerous cross-loading issues.


  • Dedicated for rifles chambered in 300 BLK that supports the differing geometries found in that caliber
  • 20-round body is more compact for increased maneuverability
  • Distinct rib design and texture provide visual and tactile differentiation to mitigate dangerous cross-loading issues
  • Next-generation impact and crush-resistant polymer


  • Manufacturer: Magpul
  • Model: PMAG Gen M3
  • Part Number: MAG1182-BLK
  • UPC: 840815132233
  • Fits Make & Model: AR Rifle
  • Caliber: 300 Blackout
  • Capacity: 20 Rounds
  • Construction Material: Polymer
  • Base Plate: Flush
  • Extended Grip: N
  • Finish: Black


  • Magpul PMAG M3 300BLK 20 Round AR Magazine


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