You can distribute with your application following assemblies (FlyGrid runtime):
[list]NineRays.FlyGrid.dll[/*:m]
NineRays.FlyGrid.Styles.dll [/*:m]
NineRays.FlyGrid.Columns.dll[/*:m][/list:u]
.xml files in the \\Bin folder is online documentation files used by VS IDE in Intellisense and Online documentation. Don't distribute these files.
About NineRays.FlyGrid.Design.dll - this is design-time assembly, you can't distribute this assembly also.