if you use a harris bipod: remove your sling from the forearm. attach the bipod so that when closed, the legs extend beyond the barrel. attach your sling to the provisions harris builds into their bipods. all done. don't need any extra studs.
the reason for having the legs extend towards the barrel, instead of towards the shooter: when shooting heavier recoiling (than 223), sometimes the recoil will snap the legs closed - an annoyance at best, painful at worst. also, if the legs extend forward, you can still comfortably handle and shoot the gun without deploying the bipod, if you desire. the bipod's feet will not interfere w/ the bullet's travel.