Glock Mag 45 ACP AR Billet Receiver Set w/LRBHO

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Part Number:MLS45-ReceiverSet

The MLS Arms MLS9 Glock Magazine Compatible Stripped Billet Receiver Sets are the perfect start to a 9MM AR15 Carbine or Pistol!

These will accept any 45 ACP upper receiver.


  • Manufactured from a solid block of Aircraft Grade 7075-T6 Billet Aluminum
  • Machined Magazine Well with drop free design and beveled bottom lip
  • CNC Deep Rotary Engraved to exceed ATF depth requirements
  • MIL-A-8625 Type III Hard Anodizing (Deep Black)
  • Captured take down pin spring/detent (includes hardware)-Uses 1/16” Allen wrench (included)
  • (Rear take-down pin spring may need to be trimmed if set screw is used to give proper tension on pin)
  • Upper Tensioning screw (includes hardware)-Uses 1/8” Allen wrench
  • Threaded bolt catch pin hole (includes hardware)-Uses 1/16” Allen wrench (included)
  • Safety Selector pocket notched for BAD 45 degree selector drop in with no modifications needed
  • Engraving accommodates 45 degree BAD, 60 degree Noveske, and 90 degree (standard) selectors
  • Integrated enhanced trigger guard
  • Continuous threading through receiver extension hole and pistol grip screw hole
  • Compatible with all Lower Parts Kits, Mil-Spec and Commercial receiver extensions, and most aftermarket parts.
  • Weighs 21 oz
  • Upper contains integrated Last Round Bolt Hold Open (LRBHO) technology that reliably holds the bolt open when magazine is empty

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