[Bronze_Cased]

I've heard this rumor about the M4 and M16: If you place the bolt carrier group bolt-down on a table and the weight of bolt carrier group is able to push the bolt into the locked position, the extractor spring needs to be replaced.

True or not?

 

[45_Storm]

No, not true. a well lubricated and slightly worn M16 will do that, yet be in perfect operating condition. The extractor spring has nothing to do with it.

 

[robocop10mm]

Fact or fiction

The extractor spring has nothing to do with it. The gas rings are the only hang up. They rarely wear out.