Here are the photos of my wife's patrol rifle I added the rail to. As you can see you can attache any number of Bi-pods that attach to a picatinny/weaver rail system in a matter of moments.
Pic 1 is the SUR with the rail and rubber rail covers
Pic 2 is the SUR with the rail covers removed
Pic 3 is the rail on the SUR, close up
Pic 4 is the rail system (nuts, screws, rail and sling piviot all included in the package)
"I never killed anyone who didn't need killing."