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 triggers like the 1005 Tactical 2-Stage Trigger.  The kit contains quality, mil-spec parts and provides you with the flexibility to spend money on the parts you want – and none of the extras that will sit in your toolbox.


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

AT3™ Pro-Builder AR-15 Lower Parts Kit

SKU: 200001007354
    • 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 guard roll pin
    • Pistol grip screw and lock washer
    • Detailed parts diagram included for quick and easy part identification





637 Main Ave SW
Hickory, NC, USA

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