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1/22/2020 12:12:56 PM
Posted: 1/19/2015 1:07:14 AM EST
What is an ar 15 buffer spring life span (carbine spring) I'm looking into buying spare parts
Link Posted: 1/19/2015 2:10:24 AM EST
Buffer spring life is measured in inches: as long as it's between 10 1/16" - 11 ¼" it's G2G.

Typical life in rounds is well into the thousands.

Check out Sprinco for "long life" action and extractor springs.
Link Posted: 1/19/2015 3:09:29 AM EST
I'd go ahead and replace mine after 20,000 rounds, but like B6 said, if it's still in spec you can keep using it
Link Posted: 1/19/2015 9:15:14 AM EST
[Last Edit: 1/19/2015 9:16:49 AM EST by G_MAN]
2,500 round interval,
Inspect and replace as necessary extractor spring, insert and O-ring

5,000 round interval
Replace extractor spring
Replace extractor insert
Replace extractor
Replace Crane O-ring
Replace gas rings
Replace action spring @ 5000 rounds ( or buy chrome molly springs, i.e. Sprinco which last WAY longer)

10,000 round interval
Replace bolt
Replace lower receiver parts

15,000 round interval
Replace barrel
Link Posted: 1/19/2015 9:53:17 AM EST
Awesome info thank you
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