Visual Ranges

If there is a visual mode or visual-line mode selection when entering command-line mode Neovim will insert the marks referencing it ('<,'>) before the cursor, so you can simply enter the desired command.

Previous Visual Selection

Neovim also remembers the previous visual selection, which can be referenced using *. For example, select some text, then hit Esc to return to normal mode. Move the cursor to another location in the buffer, then copy the previously-selected text to the cursor line using:

:*yank b