I have a gently used FAB Defense TPOD G2 SL in Olive Drab.  If you web search for "FX-TPODG2SLG", you'll find it.  It is a handguard pistol grip for a picatinny rail that doubles as a bipod and also attachment system for your favorite push bu tton tailcap, 1 inch diameter flashlight.

It works great!

Integrated foregrip, bipod, and tactical light saves valuable rail space

Built for quick transition from close range engagement to longer range precision targets

Thumb activated push on/off button allow easy signal operation

Transforms into a sturdy Bipod with the push of a button

Legs height is independently adjustable

Bipod allows slight pivot for optimal accuracy

Wide angle leg opening offers stability and enhancing combat positioning

Aviation-grade aluminum, steel, and reinforced polymer composite

Secured with dual Quick-Release wingnuts

Asking $125.  Will ship for $10.