Why the fuck would you go to all the effort of chopping up a SKS to make a bullpup and leave the original trigger exposed to being caught on shit and the gun firing? Even more so in that there's the big link attached to the front of the trigger making it even more likely to catch.
OMG! Storm trooper SKS Bullpup Blaster! | Trade Me
Imagine carrying or using the rifle. That big link on the original trigger is rubbing on your belt, pack straps etc. and wide open to sticks, vines or whatever catching on it and pulling the trigger.
Apart from being a waste of a SKS, he has made it dangerously unsafe. The rear trigger needs to be completely enclosed before it could possibly be safe enough to sell. The rifle would still be stupid though.