I emailed Clements, to ask a few ?'s He said they can be set as low as 2#. I hoping for alttle lighter for a stationary varmint rig. But he quoted me a $175.00 installed, a 2 week turn around. And $85.00+ $3.00 S/H, for self installation. He also said, that it could be set lighter with a different trigger spring, ( which he don't supply ) other than the factory spring. I'm only quessing, that lighter spring results must be iffy, when he don't supply springs :? onesonek