I don't consider the PM2 to be all that heavy to start with. The G10 Manix 2 is heavier than the PM2, and the LW version of the Manix 2 is lighter than the PM2. The LW Manix 2 has steel liners but much smaller than the liners in the G10 version and this explains most of the weight difference. Since the compression lock needs a longer liner to make the lock function you couldn't take out as much liner as you can with the Manix 2. I like the LW Manix 2 and the G10 version too. I'm happy with my current PM2s but I would buy a LW version if an interesting variant was made.