Step 1: Remove Magazine Release Pin
Using a small punch or screwdriver, push out the pin that holds the magazine release in place.
Step 2: Bolt Lock
Next, remove the pin that holds the bolt lock in place.
Now, hold the trigger down and move the hammer so it looks like the picture. Then push the hammer all the way to the right and remove the large hammer spring. Lastly, take out the pin that holds the hammer and bolt lock spring in place.
Step 4: Remove Trigger/Sear
You must be careful during this part as there is a really small spring that is a pain to find if you lose it. (trust me) With your hand over the top, gently push out the pin that holds the trigger. Put all these parts somewhere you won't lose them. Also take out the trigger stop spring from the trigger guard.
Step 5: That was the easy part....
The trigger assembly is all taken out for cleaning or whatever... But now comes the hard part, putting it back together. Start with the trigger housing and trigger stop spring in place. Then take the trigger, sear and tiny spring and put them together as shown. Now, slide this sub-assembly into the trigger housing and put the pin back in its appropriate hole.
Step 6: Install the Hammer Spring and Hammer
The picture is kinda dark, but you take the hammer spring and put the round side into the hole on the left side of the trigger housing. Now take the hammer and bolt lock spring as shown, put it into the housing, and put the pin in.
Step 7: Adding the bolt lock
Slide the bolt lock down the side of the trigger housing, the bottom should stick out of the slot in the housing. Put the other piece (who's name escapes me) over the hole on the bolt lock and put the pin through, making sure the flat part of the pin goes underneath it.