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  • Midwest PX Premium Billet AR15 Lower Receiver Gen1

    Our premium billet receiver is manufactured for us by a contract machine shop in the US. All operations are performed under one roof to ensure a quality product prior to being sent out for milspec plating. These receiver are made of 7075 billet aluminum which is significantly stronger than 6061. We have a number of extras and upgrades built into this lower such as the threaded bolt catch pin, threaded takedown detent hole, and upper/lower tensioning screw. All hardware to take advantage of these features are provided with each lower at no additional charge. We also opted for a subdued rollmark for a cleaner, more aesthetically-pleasing look. Our name and location are on the side...we know it's our lower, we don't need a huge engraving further telling us that :)

    As with all Midwest PX branded parts, this lower carries a lifetime warranty against defects in materials and workmanship.

    Save on your build by bundling our LTG LPK and milspec receiver extension kit (carbine weight buffer, milspec diameter extension, action spring, end plate, and castle nut) with your lower! Save up to $13 over regular price when purchasing these items with the dropdown boxes below vs. adding them to the cart separately!

    Picture of the other side: HERE

    Full list of specifications and features:

    *Manufactured from a solid billet aircraft-grade 7075-T6 aluminum
    *Matches forged uppers
    *Broached 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. (Rear takedown pin spring may need to be trimmed 1/8-1/4" if set screw is used to give proper tension on pin)
    *Upper/lower tensioning screw (includes hardware) - Uses 1/8 Allen wrench
    *Threaded bolt catch pin hole (includes hardware) - Uses 1/16 Allen wrench
    *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
    *Compatible with Norgon and other aftermarket ambidextrous magazine releases
    *Integrated enhanced trigger guard
    *Low Shelf design to make full auto conversions for LE, MIL or post sample machine guns easier (RDIAS/RLL)
    *Continuous threading through receiver extension hole and pistol grip screw hole
    *Compatible with all lower parts kits, milspec and commercial receiver extensions, and most aftermarket parts.
    *The Tactical Link AR-15 Enhanced Battery Assist Lever WILL work with the PX-15
    *Like most billet lowers, the Magpul BAD lever will NOT function properly on the PX-15


    This item MUST be shipped to an FFL. You must be 21 or older to take possession from the FFL.

    List of FFLs already on file (Best to right-click and open in a tab or window)

    If we do not already have your receiving dealer on file, please have the receiving FFL send a signed, legible copy of their current license to and reference your name and order number. Licenses can also be faxed to 877.335.1978

    Midwest PX, LLC IS registered with CA-DOJ and will ship to California!

    $159.95 $99.95

    Available Options:

    Add a Midwest PX LTG LPK?:
    Add a milspec extension kit?:
    This product was added to our catalog on Friday 24 January, 2014.