After receiving my GSG5 and firing 5 rounds through it, i thought that is a crap trigger and is not good enough to achieve the best accuracy. Especially for bunny bashing.
So After studying simplegreen and Jackal2001s detailed break down descriptions(thanks for that Lads) and then stripping down the trigger mech, found away of tweaking the trigger to a crisp break, instead of an endless pull.  so this is it, its easier than it looks.

First i laid on this part of the trigger housing a 3M bolt from the bolt replacment mod. This is the angle to drill a 2.4mm hole needed to run a Tap for the 3M thread.
http://<ahttp://inlinethumb08.webshots.com/41735/2833199210044063482S425x425Q85.jpg</a>" />

This is the hole drilled and Taped.
http://<ahttp://inlinethumb43.webshots.com/23210/2711613200044063482S425x425Q85.jpg</a>" />

This is the original gsg bolt screwed in.
http://<ahttp://inlinethumb56.webshots.com/44791/2918964540044063482S425x425Q85.jpg</a>" />

I now cut off the head and cut a slot in it with a dremal. this will allow you to tune the break and creep to you own comfort.
http://<ahttp://inlinethumb28.webshots.com/31195/2377835230044063482S425x425Q85.jpg</a>" />

Now, first screw in the screw and adjust to your comfortable trigger break. Make sure the screw does not stick out the top of the block, otherwise the housing wont fit. I found that 3mm measured between the sear housing and the drilled block, was just about right. Remove applie plenty of thread lock then reposition.

http://<ahttp://inlinethumb24.webshots.com/23895/2921060260044063482S425x425Q85.jpg</a>" />

I needed to grind a small amount off of the placement stud on the left hand part of the trigger plate, this locates into the hole of which the screw passes.

I also removed two coils off of the sear and magazine safety spring. The one on the sear housing, to lighten it up a bit.

im working on removing or at least lightening the first stage of the pull and will pass it on if i succeed.

It has been working great since the mod and a pleasure to shoot. all the best.

BEWARE, THIS COULD TURN YOUR GUN INTO FULL AUTO IF YOU ADJUST THE SEAR TO FINE, COULD EMPTY THE COMPLETE MAG.