While the new Performance Center Model 629 is decked out with modern updates and upgrades developed over the decades—including a stainless steel frame, cylinder and barrel implied by the “6” prefix—it is Model 29 to the core.
The Ruger Single-Seven (offered exclusively through firearm distributor Lipsey’s) has the same frame size as the older rimfire Single-Six, but it is chambered in .327 Federal Magnum. Except for the sights, all the visible metal is stainless steel. The laminated hardwood grips have an orange tint and a Ruger medallion inset.