Quote Originally Posted by MistWolf View Post
Parts I've replaced due to wear or failure-
-Extractor spring
-Action spring
-Hammer spring
-Gas tube
-Gas rings
-Bolt catch
-Bolt catch roll pin

A friend replaced a worn barrel
A few questions if you could give more details:

On the hammer, was that on a blowback PCC by chance?

The gas tube, how did that fail?

And the bolt catch, did that fail at the same time as the roll pin? What happened to it?