ArmaLite Prince AR30, AR50 Bi-pod with Adaptor can be attached to any gun within seconds, without the need for a gunsmith. Save money by not using a gun smith to install this extremely sturdy bi-pod. Legs that will lock into position are a huge advantage out in the field when it would be the absolute worst time for a collapse. Your heavy weapon will be more study than a giant redwood tree. Fold up the legs for transport.