While Ruger does not have an official warranty, they do support their products, at least in the one instance I needed it.

I have 77/22 bolt action rifle from the early or mid 80s. Probably very soon after it was first produced. I shot it a lot, finally the extractor in the bolt wore out. I sent it in, they sent the rifle back (eventually) with a new bolt. My only gripe is they replaced my blue bolt with stainless. Not sure why they couldn't just replace the extractor. This was late 2000s, so over 30 years after I bought it. No charge.

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Common sense isn't so common.