Aero Precision Replacement Spring / Detent Oops Kit (AR-15 / AR-10)

Aero Precision Replacement Spring / Detent Oops Kit (AR-15 / AR-10)

Product Code:
Calculated at Checkout

MPN: APRH101627


  • Fits all standard lower receivers
  • Features the most commonly lost parts
  • High quality with competitive pricing


  • AR-15, AR-10, M4E1 and M5


  • 2x Bolt Catch Roll Pin
  • 2x Buffer Retainer
  • 2x Buffer Retainer Spring
  • 2x Safety Selector Detent
  • 2x Safety Selector Detent Spring
  • 4x Pivot/Takedown Pin Detent
  • 4x Pivot/Takedown Pin Detent Spring
  • 2x Trigger/Hammer Pin
  • 2x Disconnector Spring
  • 2x 4-40 Set Screw (for threaded takedown in detent hole)
Write a Review

18 Reviews


    Posted by JOHN DOE on 8th Dec 2020

    Everything pictured was accounted for and worked like it should.

  • Life Saver

    Posted by Ernest Atwood on 8th Dec 2020

    Aero Precision knows the AR platform, and more importantly understands what we need. If you’ve ever built, are going to build, or even disassemble an AR, you need this kit. You won’t be sorry.

  • Good for Building

    Posted by Peter McCully on 3rd Jul 2020

    Good quality springs and pins for a build. I build ARs piece by piece instead of buying LPK to really get things set up how I like, and this kit covers 80% of the little stuff. My only complaint is no magazine spring, bolt catch spring or plunger. To it's credit, that's not what its for anyway.

  • Aero Precision spring & detent kit

    Posted by Pete Simonson on 17th Jun 2020

    These were purchased as 'spares' - I have not used any as of yet, but they appear to be well made. Price was very good.

  • Oops kit for AR

    Posted by Joseph on 10th May 2020

    Theses oops parts are really good and affordable .

  • OOPS Kit

    Posted by William on 5th May 2020

    This is a must have. Nothing more frustrating than searching for dropped small parts. Wing Tactical always has great prices and fast shipping!

  • Will buy again

    Posted by Bobby on 30th Apr 2020

    Great quality

  • Great product

    Posted by Mat mc on 25th Apr 2020

    great insurance to have around when you shoot a takedown pin detent spring across the room

  • Good project

    Posted by Bobby on 19th Apr 2020

    Great product! Fast shipping!

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