AR-15 Lower Parts Kit

Our AR-15 Lower Parts Kit is a military-spec lower parts kit that includes all components necessary to finish building your AR15 lower receiver. Whether your building a new rifle or just want to stock a spare parts kit, this kit is ideal for both uses. Order today and build your next AR!

In stock

Color Black

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American Owned and Operated


20+ Years In Business

Returns Accepted

Ships from Pennsylvania

  • Buy 3 for $39.95 each and save 20%


  • Mil-Spec Fire Control Group (Trigger, Hammer, Disconnector)
  • Mil-Spec spring kit
    • Hammer Spring
    • Trigger Spring
    • Disconnector Spring
    • Pivot Pin Spring
    • Takedown Pin Spring
    • Buffer Retainer Spring
    • Selector Spring
    • Bolt Catch Spring
    • Magazine Catch Spring
  • Mil-Spec Selector
  • Mil-Spec Bolt Catch
  • Mil-Spec Magazine Catch
  • Mil-Spec Small Parts Kit
    • Takedown Pin
    • Takedown Pin Detent
    • Pivot Pin
    • Pivot Pin Detent
    • Trigger Pin
    • Hammer Pin
    • Selector Pin
    • Bolt Catch Roll Pin
    • Bolt Catch Buffer
    • Buffer Retainer
  • Mil-Spec Grip Kit
    • A2 Grip
    • Hex-head screw
    • Lock washer
  • Mil-Spec Aluminum Trigger Guard Kit
    • Trigger Guard
    • Trigger Guard Roll Pin

More Information

Customer Reviews

Review by Agampreet H.
Verified Buyer
Excellent trigger engagement, and all pins slid right into a Bushmaster lower.
Worth the extra
Review by Chinmay E.
Verified Buyer
This is a great LPK, would use it again.
Great Kit!
Review by Wah W.
Verified Buyer
All pieces were there and top notch construction. Fit perfect into a Spikes lower I'd recently picked up.
Best Lower Parts Set Period
Review by Quintion O.
Verified Buyer
I will be ordering my second set for my next build. Quality parts and best roll-pins and trigger set I have ever seen.
Lower Kit
Review by Yandriel O.
Verified Buyer
Fast shipping, no missing parts. Worked very well on stripped lower.
Review by Faizan I.
Verified Buyer
very good parts kit, very nice roll pins. Installed one and will be ordering more to have around.
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