Open a warranty claim on Ruger's website. They will deem the correct course of action and if necessary have the Canadian warranty center (currently Gravel) ship parts or they will provide an RMA with instructions.
While Ruger does not have a published warranty, I have never known them not take care of a customer (real cases, not internet lore).
While Ruger does not have a published warranty, I have never known them not take care of a customer (real cases, not internet lore).