Ruger Single-Six Single-Nine, Single Action Only, Revolver, 22 WMR, 6.5 Barrel, Stainless Steel, Satin Finish, Silver, Hardwood Gunfighter Grips, Adjustable Fiber Optic Sights, 9 Rounds 08150 Ruger Single-Ten Model Single Action Revolvers are strong, durable, dependable and versatile. They are perfectly sized for low-cost rimfire ammunition. Windage and elevation adjustable rear sights (available on most models) help put you on target and keep you there. The patented transfer bar mechanism and loading gate interlock provide an unparalleled measure of security against accidental discharge and the cold hammer-forged barrel results in ultra-precise rifling that provides exceptional accuracy, longevity and easy cleaning.