MFG Date: 1988 Model Number: 0621 Caliber: 22 LR / 22 WMR Upgraded Grips - Rosewood Dymondwood Grips $83.95 Upgraded Front and Rear Sites - Click adjustable fire sight set for the Ruger® Single-Six $74.95 Barrel Length5.50" Extra Cylinder22 WMR Capacity 6 Twist 1:14" RH Material Alloy Steel Finish Blued Overall Length11" Weight33 oz. Groove 6 Suggested Retail $829.00 Chambered for affordable rimfire shooting. Transfer bar mechanism and loading gate interlock provide an unparalleled measure of security against accidental discharge. Cold hammer-forged barrel results in ultra-precise rifling that provides exceptional accuracy and longevity. Extra cylinder allows shooters to quickly change from shooting .22 LR to .22 WMR.