Bipods are folding legs attached to your rifle that can provide a steady aiming platform. They can be stowed away when not in use or deployed on the fly to enhance your accuracy. Bipods can be mounted by one of two ways. Many sniper rifles (or hunting rifles) use a bipod stud which looks like a simple eyelet. Traditional bipods mount by hooking into the bipod stud and then clamping down. Another style is rail system mounted. Most military style arms will have rails or a RIS (rail interface system) which allows attaching of universal RIS mounted accessories.