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AR-15 300 Blk Pmag 30 Gen M3 Magazine
by Magpul
In stock at Brownells
on 4-28-2018.
  • Dedicated, purpose-designed magazine for rifles chambered in .300 Blackout
  • Optimized internal geometry accommodates the wide variety of bullet profiles used in .300 Blackout cartridges
  • Distinct rib design provides the shooter a visual & tactile difference from any other PMAGs to mitigate dangerous cross-loading
  • Carries forward the physical & performance features of the rest of the Gen M3 line