Here is a thought. If you can find a cut up 1907 bayonet and fasten a Versapod type stud to the front.
Versa-Pod Bipods | Stop-By to Compare the Best Bipod Reviews
There was a fellow doing 3-D printed bayonet adapters I will try and find the info and post it here.
Here is the website. .625 ID-Clamp on STGW 57 Bayonet lug (VHN6MP4DQ) by Cogburn