The 100 and 110 use identical triggers and regs so no difference there. The 110 has an o ring in the front of the chasis where the cylinder screws in. Newer 110,s have the roller bearing fitted to the cocking lever and a new shaped hammer that is a little lighter and prevent the ping noise.
After stripping quite a few, my LG100 barley twist has better finishing on the internals. The trigger sears look like they have been made to a higher standard or just maybe finished better?