The only thing that will make a bolt pull lighter is a lighter spring 
Both of these cylinders help make is a lot smoother. And there is a smoother surface for the piston to slide on when fired. So it doesn't get any "lighter" it just makes is slide smoother.
Both of these cylinders help make is a lot smoother. And there is a smoother surface for the piston to slide on when fired. So it doesn't get any "lighter" it just makes is slide smoother.