[Brad Deckard]

That breech looks ok, you have to knock the sear out first which will release the spring and release the cams. Then the breech will drop out the bottom. , it may need a tap.. You dont need any special tools to remove the coil spring. But DO NOT attempt to dismantle the spring housing as its under tension.

You will need a crow bar for a lever and a drift and a hammer.. But if your wacking it like hell your doing something wrong..

I will get some photos on here to help you.
Brad