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

 Secure Online Payments


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

Good Item
Review by Scottie V.
Verified Buyer
Received in two days after placing my order. Will be back to shop at keepshooting.
Very Happy
Review by Georgie G.
Verified Buyer
Delighted with this company.
Very Happy
Review by Aric W.
Verified Buyer
Perfect replacement lower parts kit for my AR15.
Good Spare Part
Review by Tremel P.
Verified Buyer
Best AR15 lower parts kit for the price sold by a terrific company. Thank you ks!
Very Satisfied
Review by Jason X.
Verified Buyer
I purchased two of these lower parts kits. Using one for repair, other is stored in my spares box.
Perfect Product
Review by Donivan R.
Verified Buyer
Cost is perfect and shipping was fast.
Very Pleased
Review by Deshun A.
Verified Buyer
Parts look perfect. Exactly what I wanted.
Great for my use
Review by Kalvin H.
Verified Buyer
I ordered two of these lower parts kits. Using one for repair, other is stored in my spares box.
Great Seller
Review by Linn B.
Verified Buyer
Parts look excellent. Exactly what I needed.
Perfect for my use
Review by Don I.
Verified Buyer
Received in four days after ordering. Will be back to buy from KS.
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