I've got the quad rail version and I'm using a t-pod ( for grip bipod ) but troy does offer rail sections , they look pretty normal seems like you could use any piece of rail ( might be wrong , not 100% )
https://troyind.com/rail-systems-accessories/rail-accessories/quick-attach-rail-sections
https://troyind.com/rail-systems-accessories/rail-accessories/quick-attach-rail-sections
























































