This is my rendition of the FIOS Gateway wall mount. The other ones either have alot of wasted space or the pegs are too tight. So I made my own lightweight version.

The pegs slide right in without any friction. it is important that you reuse the base attachment screw to secure the router.

Use supports for the mounting screws and pegs for best results.

The mounting screws are 3mm wide, I may upsize it to 6mm.