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    We Ship Fast!

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

    Tired of swapping out parts?  Build the lower you actually want.

    This premium lower parts kit features our AT3 Enhanced Nickel Teflon Trigger, giving you the quality trigger your rifle deserves, and the flexibility to tailor your lower to your preference.

    This kit is great for any AR builder who wants quality components without breaking the bank, and pairing the pistol grip and trigger guard of your choice with our Nickel Teflon Trigger Assembly.  The trigger has a smooth pull and clean break unlike a standard trigger, which can be gritty and detract from accuracy.

    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:

    • Nickel Teflon Hammer
    • Nickel Teflon Trigger
    • Enhanced Disconnector
    • Hammer Spring
    • Trigger Spring
    • Hammer Pin
    • Trigger Pin
    • Disconnector Spring
    • 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

    Have Questions About this Product?

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    Customer Reviews

    Based on 13 reviews
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    D
    D.B.J.
    AT3™ Enhanced Lower Parts Kit with Nickel Teflon Trigger - No Grip or Trigger Guard

    very good quality and excellent shipping, very fast. product is high quality, would definitely purchase again.

    David, thank you for the review! We’re so happy you loved the product and can’t wait to have you back. – AB
    J
    J.B.
    Very Nice!

    High quality LPK, with a very nice trigger. Lighter trigger spring would be nice, but I can't take a star off for that. Quality is very good & shipping is amazing, great job guys!

    Glad to know it's working well for you, Joseph. We appreciate your feedback! -- LM
    G
    G.G.
    Great parts kit.

    Let me say that not only the lower parts kit is great and but the whole shopping experience was very satisfying, I’ve made a mistake on my end and they immediately reached out and helped me corrected it. Thumbs up to AT3 guys...

    We really do our best to deliver not only quality products, but quality experience as well. We're glad you are enjoying your new kit, Gjon! --LM
    K
    K.C.
    Perfect for my current build

    I had a grip and a trigger guard....I wanted a lower parts kit but wanted a better than stock mil-spec Fire Control Group.... this kit has it all for a great price.

    W
    W.C.
    Right there at the top

    Probably one of the best if not the best lpk I've ever put in my self. Will be buying more from these guys. Great fit and finish smooth trigger.