This might open up a whole new can of worms.

Via Willamette Week: 

The Oregon Bureau of Labor and Industries found this week that a Walmart store in St. Helens violated the state's nondiscrimination laws when it refused to sell a rifle to a woman who was not yet 21 years old.

Hannah Brumbles, 18, of Deer Island, Ore., filed a civil rights complaint with the state agency in April. She says Walmart discriminated against her by refusing to sell her a rifle, even though Oregon law says individuals over 18 may legally purchase firearms. BOLI agrees...

Brumbles' case is set for a hearing in November to determine damages, which could be as high as $5,000.

It also sets a precedent: Stores are legally obligated to sell guns to 18-year-olds in Oregon, unless lawmakers act. 

Read more here.