My local Wallymart has been experiencing periodic shortages for a couple of months now. My bet is increased demand for airguns during lockdown coupled with supply chain hiccups. Add to that Walmart's decision to discontinue selling air pistols of any type and to put the rest of the airguns behind glass. I think that accounts for the impression that airguns are disappearing from the stores.If Walmart is investing in secure glass display cases for airguns, I don't think they are discontinuing them soon.