Do that on top of a body weight scale. No special tool is really needed.I pulled the moving parts assembly out of one of my 17's and compressed it till coil bind of the spring and it took considerable force to reach spring coil bind. I don't know how many pounds of force it was, maybe someone with a appropriate scale could test and report back with a number.
I kind of thought the overgassed issue would of been negated with the the adjustable settings on the gas block? Could it be a hotter than recommended subsonic load? Does FN even recommended anything? If this issue really boils down to replacing plastic with metal then I think my wallet is going to hate me again ahaha!
Just one???Do you see how many people are complaining about the stock hinge breaking?