If you want to get the good stuff I would go with the trigger. It looks like an exact clone of the LL one but I have never used the LL one so I can't say for sure. It has been working perfectly for the past few months now for me. The only issue is you have to file/sand the sides of the spring guide stopper to get it to fit but that only takes a few minutes. I also have a perfect air seal with the piston that comes with it so that's a plus.