https://tangodown.com/shop/tangodown-foregrip-vertical-iti/
Tango Down full size VFG with pressure switch slot, Flat Dark Earth color. Missing the pressure switch slot cover, but TD will likely send you one for free or little cost if you ask.
$28 shipped
Pictured Surefire M600A is also available for sale.
Trades accepted, offer what you have.
Thanks for looking!