http://www.gunco.net/forums/f245/sgn-9-a-37899/ Here's a picture of the internals. The blue rear block has the safety detent (the safety works), and it also controls the sear travel. The red bar is the disconnector. The front block is already riveted in. I have since made a new trigger bar out of heat treatable steel. THe disconnector works just like the remington in that the hammer spring pushes it up at the top of the stroke which lifts the trigger bar off of the sear so it can reset. It works great.
I'm very impressed
I'm an expert @ what won't work & what not to do