2 Used Competition Machine Bipods. They fit 2" ID tube gun hand guards. They are a very ridged full adjustable design specifically for Competition Machine chassis systems with a 2" ID hand guard. These are both equipped with the optional articulated ski feet. $150.00 each Includes shipping to the lower 48 states. Shipped ground service and insured with tracking number to lower 48. Payment can be made with USPS money order or cashier’s check. Personal check is okay but shipment will be held until good funds are in my account. Satisfaction guaranteed.