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    We Ship Fast!

    Order by 1PM CST for Same Day Shipping (Mon-Fri)

    Perfect Lower Parts Kit for the Premium Builds

    This quality lower parts kit excludes the two most commonly upgraded components - the grip and the trigger assembly (fire control group).

    This is the perfect kit for premium builds that include premium upgraded triggers like the 1005 Tactical 2-Stage Trigger. The kit contains quality, mil-spec parts and includes the selector as well as hammer and trigger pins for installing the fire control group of your choice.

    American Made Quality

    • All parts meet or exceed military specifications (Mil Spec)
    • Components are 100% Made in the USA
    • Quality packaging keeps components protected and organized
    • Backed by the AT3 Lifetime Warranty

      This Kit Includes:

      • Bolt catch
      • Bolt catch plunger
      • Bolt catch roll pin
      • Bolt catch spring
      • Buffer retainer
      • Buffer retainer spring
      • Magazine catch
      • Magazine catch button
      • Magazine catch spring
      • Pivot pin
      • Pivot pin detent 
      • Pivot pin detent spring
      • Selector
      • Selector detent
      • Selector detent spring
      • Takedown pin
      • Takedown pin detent
      • Takedown pin detent spring
      • Trigger Pin
      • Hammer Pin
      • Trigger guard roll pin
      • Pistol grip screw and lock washer
      • Detailed parts diagram included for quick and easy part identification

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      Customer Reviews

      Based on 13 reviews
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      J
      J.S.
      Lower parts kit

      Super fast shipment, exactly as described. Great product at best price found. Thank you!

      Thanks for sharing your experience, Jeffrey. We're glad you're satisfied with your purchase. Cheers! - AB
      J
      J.M.
      Just right

      This was a good value and just what I needed, did not have to pay for extra parts I did not need.

      Thanks for sharing your feedback, John. We're glad you're satisfied with your order. -AB
      w
      w.m.
      fantastic

      fantastic went in ati polymer lower fit perfect

      Looking good! Thanks for choosing AT3, William. We work hard to meet expectations like yours, we're glad we hit the mark for you. Cheers! - AB
      G
      G.B.
      Nice lil parts kit

      This lower parts kit worked very well for me as I choose a different stock and trigger. I didn't want to waste money on parts I didn't need. The kit comes with brief instructions and AT3 had the parts sorted in such a manner to make it all easily identified for proper placement.

      We really appreciate you taking the time out to share your experience with us. We work hard to meet expectations like yours, and we’re happy to hear we hit the mark for you. Cheers! - AB
      P
      P.H.
      Perfect

      It was exactly what I was looking for. Everything fits perfect. Every part is high quality, I highly recommend.

      We try our best to provide products that are cheap in price, but not in quality. Thank you for the feedback, Paul! -- LM