Started with this
This is where the pins are, one at 6 o'clock and one at 12 o'clock
I ground down far enough to find the pins but they wouldn't budge, so I took my dremal and used a cut off wheel to cut the comp in half. Make sure you do this right down the middle of the pin.
Then using a cold chissel, I split the comp. When I did this, it loosened the pins up.
I turned the pin by using the slot cut down the middle of the pin. Then I ground around the pin, using the cut off wheel until I had enough room to grab the pin with a needle nose pliar.
After the pin is out, cut down the middle a bit more, to connect the hole to the rest of the cut. Then split the comp open using the chissel.
The comp comes right off.
And here is the barrel with a phantom mocked up
Does anyone want to add this to the tacked HOW-TO's?