Thank you everyone. Hopefully I won't have any issues with it in the future.
One more question, how do I remove the fire selector? I've been looking on the internet, and haven't been able to find an answer. My fire selector is non ambidextrous, and only located on the left side. Do I have to take the selector off to be able to access the lower gearbox, or does it stay on?
Sorry for all the n00b questions. I really appreciate the help.
Looks like gearbox also features a quick change spring!
Last edited by MatthewRyan; January 1st, 2015 at 20:13..