300 blk

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    1. 10.5" 300 BLK AR-15 Upper with 1-6x Primary Arms ACSS Scope
      Sold

      For sale 10.5" 300 BLK AR-15 Upper with 1-6x Primary Arms ACSS Scope

      PSA BCG Anderson Sport Upper PSA Rail PSA Barrel PSA Charging handle Aero Ultralight 30mm Extended scope mount PA SLx 1-6x ACSS 300blk LPVO and a snazzy 3d printed receiver dust cover!
      $450.00
    2. Z

      Convert 5.56 AR Pistol to 300 Blk

      If I have a MD registered 5.56 AR Pistol can I legally install a 300 Blk upper? Where can I find regulations on this? Ty for any help!
      • ZBryant63
      • Thread
      • 300 blk ar pistol ar-15 ar-15 pistol pistol
      • Replies: 8
      • Forum: Handguns
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