Hilton Yam 1911 Duty Tune: Fieldstripping & Teardown Tips

I have never see that method to field strip before. It looked pretty easy to do, I will have to give it a try. I have neve left a mark on my forehead or the ceiling , but I have sent a few extra minutes looking for all the parts. I also looked around on the internet for the armors tool, with no luck, maybe it has a specific name. Any help there would be appreciated . Thank you.