Ruger Single Ten Mainspring Seat, Stainless $10.00 Stainless Mainspring Seat for the Ruger Single Ten, 10 shot, .22 revolver. In stock Ruger Single Ten Mainspring Seat, Stainless quantity Add to cart Category: Ruger Related products LPA Ruger Fibre Optic Adjustable Sight Set. $225.00 Ruger GP-100 Reduced Power Shooters Pak $24.97