Remove the pin from the safety lever. Remove the lever. Tap the rear pin out. Set the receiver in a spring compressor and apply a little pressure to the rear guide. Tap the other pin to see if it will move. You may have to add or remove some pressure with the compressor to get tension off of the pin to finish driving it out.
Dave, Keith,I'm embarrassed to ask this, but I think it will get me moving again at least - I have both pins out but no movement at all. I can't see how the trigger group comes out, and it won't budge at all. Would you mind helping me out and explaining how you got the trigger out? It's been a while since I've been on the bench, too...Best,Mike