Think you can do it. If you're careful and don't bang the gun around, can lift that side plate off without having things go zipping around the room, To be sure, would toss a rag over the side plate once you get it loose and start to lift it. With the pictures, you can figure out where everything goes; just study it (or take a cell-phone picture...or sketch it out on a sheet of paper) when assembled so you can get it back to that state.
Go slow...be careful...and look hard before removing anything.