Gentlemen,
Sometimes, even at my old age, I still am amazed by the old adage of "What were they thinking? " This is one of those times. You want an excellent lightweight rifle, which requires a lightweight stock to keep the weight down (foam filled or hollow), normally blocked with aluminum for the barrel and action, then start adding attachments to it to make a shooting rest (bipod). These lightweight stocks are intended to be shot either off-hand or off a bag, limb, pack or whatever you can get a firm rest on. The swivel studs are made only for a sling. I've repaired several of these but always advise owners to use the bipods on heavier made stocks. I also quit repairing them because I couldn't make any money doing it as it is too time consuming.