AR9 Lower Receiver — Billet, Anodized

(4 reviews) Write a Review

The Outerwild in-house machined AR9 pistol caliber billet lower receivers are the perfect foundation for your custom build. We start with a solid billet of 7075-T6 aluminum and then precisely machine all of the critical features and dimensions to ensure that every receiver is perfectly in spec. We then hand deburr, tumble, and hard coat anodize. The result of our time and attention to detail is a receiver that will last you a lifetime and guarantee you a worry-free and quality build. These receivers accept all small frame Glock-style double stack magazines in 9mm, .40 S&W and .357 Sig. 

  • 7075-T6 Aluminum
  • Type III Class 2 Hard Coat Black Anodized
  • Threaded Bolt Catch Pin Included
  • Rear Takedown Detent Spring Retained with Set Screw Included
  • Upper Receiver Tension Screw Included
  • Magazine Catch, Billet 6061-T6 Aluminum Included
  • Fixed Ejector and All Proprietary Parts Included
  • Marked: Outerwild
  • Model: Outerwild9
  • 100% American Made

 ***Please note, this is a restricted item and must ship to a Federally licensed gun dealer. Item will ship with a copy of our FFL for your dealer records. You will have an opportunity to upload a copy of your dealer's FFL at checkout. If you do not have a copy, simply have your dealer email a copy to Your order will not ship until we have a copy of the receiving dealer's FFL on file.


  • 4
    AR9 Lower

    Posted by Umpqua on Aug 14th 2020

    Have not assembled yet, but good looking lower. Plan on more when in stock.

  • 5
    AR9 Billet Lower, so nice!

    Posted by Elizabeth Radke on Nov 10th 2022

    Just assembled the AR9 Billet Lower. Super easy, everything fit perfectly! Really impressed at the machining, so clean and flawless!!

  • 5
    AR9 billet lowers

    Posted by Ram-Rods Guns and Ammo on Aug 17th 2020

    Looks good... wish they were raw!

  • 5
    great quality

    Posted by Unknown on Apr 30th 2020

    very good quality and good tolerances

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