Enfield No.1 Mk.3 Rear Sight Disassembly Question/HELP

[j_page2]

yes I've stripped it down pretty much completely, and in the correct order.
I have some experience taking apart bolt guns, which are easier than semi-autos.. and am pretty careful and meticulous about it.

I do it because I know theres a ton of gunk and grime and possibly rust that is usually underneath/inside that I want to take care of before it goes into the safe. I'm just having trouble with this one little part.

Luckily there is not really any rust on this gun, but i have never seen so much dirt before in every crack and crevice in my life..
The only parts i won't mess with are the pins that hold the small metal fittings to the forearm of the stock. I also don't remove the barrel from the receiver, and i may also leave a couple other parts of the receiver intact because its not worth dealing with the pins.