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Springs are found in the following location on the M4, M16, and all AR15 pattern rifles:

  • Buffer assembly
  • Forward assist
  • Ejection port cover
  • Extractor
  • Buffer detent
  • Bolt catch
  • Hammer
  • Magazine catch
  • Safety selector
  • Rear takedown/pivot pin
  • Trigger
  • Disconnector

On most models, there is also a spring in the rear sight assembly, if so equipped.

There is also a spring under the detente in the front sight assembly. And don't forget the magazine spring.

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15y ago

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