Sorry, can't help you there, as I'm not familiar with the B-Square products. I did go to their site to see if they had any of their manuals posted to see if I could figure it out for you, but no such luck. Do you have the manual for the bipod? If so, it should state how all of those pieces go together, and what you might need to make it work for your application.
Personally, I use Harris bipods, and have had good luck with them. There is also another out there, the Versa-pod, that some swear by, because you can buy the mount for several different guns, then detach the legs to mount on any of those guns.
If you don't have the manual for your bipod, go the B-Square site, then have a "Contact Us" button, write to them and I'm sure they'll help you out.