I would have that gun back to Wally World inheartbeat. I can't believe they would sell a product that is 9 years old, regardless of the price. And I agree with some of the others, probably some sort of residue in the barrel. Gun that old setting in a Wally World store could have been corroded long before youbought it and you didn't realize it.

I am not a Walmart fan. The majority of their personnel have little knowledge of the products they sell. No fault to the workers, thats the Wally World way! I returned an ML to them not long ago that was suppose to factory grade but found out it was a cheaper version made specially for Wally World. They took it back without hesitation but the department manager was a bit crankyabout it.