Shoten Armory Extended Action Release Installation (Mossberg 500 Trigger Disassembly and Reassembly)

How to disassemble and reassemble the trigger group assembly, or housing, on the Mossberg 500/590 to install the Shoten Armory Extended Action Release Lever from http://www.shotenarmory.com

My review of the Shoten Armory Extended Action Release Lever: http://youtu.be/-BIyZLE9k3Y

Disclaimer: I received these products for review for free, thank you ShotenArmory. I do not receive any financial compensation. This review is my personal opinion.