The closest things are probably from Accu-Shot and ADM, they're QD mounts with 1/4-20 threads in the bottom to mount an ARCA plate.
Accu-Shot precision monopods, Atlas bipods and rifle accessories provide a high-degree of accuracy for long-range hunting, law enforcement or military duty.
www.accu-shot.com
The AD-TP Tripod Mount enables you to attach a standard camera tripod baseplate (1⁄4×20) to your railed forearm creating an extremely stable shooting platform. It is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the Patented QD Auto Lock™...
www.admmfg.com
In theory you could use this ADM mount too with an MLOK ARCA adapter.
The AD-MLOK-BP Bipod Mount enables you to attach an MLOK compatible accessory to your Picatinny forearm. Compatible with the Magpul MLOK Bipod (MAG933). Available in standard QD lever, it is precision machined from 6061 T6 aluminum and finished in hard coat T3 Mil-Spec anodize. It features the...
www.admmfg.com
I've used the QD Tripod Mount and it works fine, maybe a little on the bulky side if you leave it attached to the gun but not bad when left on the tripod.