Handled a Ruger 57 today. Surprised how light it was. I was also able to do a quick side-by-side comparison of it and the FN Five-SeveN.
Notables:
FN is slightly heavier, even though it has a steel reinforced polymer slide.
Ruger slide is all metal with a lightening cut towards the front sight.
Ruger magazines are metal and dimensionally smaller than FN.
Ruger grip is slightly smaller than FN, probably due to the smaller magazine.
Both come with 20rd mags.
Notables:
FN is slightly heavier, even though it has a steel reinforced polymer slide.
Ruger slide is all metal with a lightening cut towards the front sight.
Ruger magazines are metal and dimensionally smaller than FN.
Ruger grip is slightly smaller than FN, probably due to the smaller magazine.
Both come with 20rd mags.