AR-STONER Crucial AR-15 Parts Kit

  • Product #: 372872
  • AR-Stoner #: Crucial-Parts-Kit
AR-STONER Crucial AR-15 Parts Kit
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Ships tomorrow from MidwayUSA

Product Overview

1 Year MidwayUSA Exclusive Brand Warranty

MidwayUSA Exclusive Brand Warranty


  • Standard Mil-Spec Lower Parts
  • Smooth Operation
  • Dependable Parts at an Unbeatable Price

The AR-STONER™ Crucial AR-15 Parts Kit is the best option on the market for replacement small parts. Keep this kit on hand during your next AR-15 build. If you've ever dropped a detent on your shop floor, or had a spring jump out, you know having this kit will save you time. No more scanning the floor for hours for that small part and putting your build on hold. This kit includes crucial standard mil-spec parts used in an AR-15, to ensure smooth and reliable operation and build saving time. Add the AR-STONER™ Crucial AR-15 parts kit to your next order to save time and give you peace of mind.

Kit Includes: 

  • Firing Pin Retaining Pin - 2
  • Takedown and Pivot Pin Detent - 4
  • AR-15 Extractor O-Ring - 2
  • Extractor Spring AR-15 - 2
  • Buffer Retainer Spring - 2
  • Takedown and Pivot Pin Detent Spring - 4
  • Safety Selector Detent - 2
  • Buffer Retainer - 2
  • Safety Selector Detent Spring - 2


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Product Information

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Delivery Information

Must Ship to FFL Dealer Yes
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Ships Alone Yes
Oversized Yes
DOT- Regulated Yes
Carrier Restrictions
  • Cannot ship via air
  • Cannot ship via USPS
  • Cannot ship to PO Box
  • Must ship to Contiguous US
HazMat Product Yes



  • The Bolt Carrier Assembly
    The Bolt Carrier Assembly
  • The Buffer Assembly
    The Buffer Assembly
  • The Pivot Pin
    The Pivot Pin
  • The Safety Assembly and Pistol Grip
    The Safety Assembly and Pistol Grip

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