You can find the TangoDown M-LOK Stubby Vertical Grip FDE here. Fast $9.95 shipping on this item!
The TangoDown M-LOK Stubby Vertical Grip combines the function and compact configuration of the original Stubby series of grips with the M-LOK interface. The Stubby Vertical Grip has a Compact length with comfortable injection-molded shape. All mounting hardware is Mil-spec quality, from the stainless-steel fasteners with pre-applied Vibra-Tite thread locker, to the aircraft grade aluminum mount with a TYPE III hard coat anodized finish. Made in the USA.

Color: Flat Dark Earth
OA Length: 3.125"
Weight: 2.2oz