A Battle Creek teenager has now filed a lawsuit against Dick’s Sporting Goods for age discrimination, after he was barred from purchasing a gun.

WOOD-TV reports that 18-year-old Battle Creek High Schooler Tristin Fulton attempted to buy a gun this week from a Dick’s store in Troy, but he was refused due to a new store policy of only selling to those 21 and older.

That policy, along with similar ones at Walmart and other retailers, was implemented in the wake of the Parkland, Florida school shooting last month. Dick's also announced that they would stop selling "assault-style" weapons and high-capacity magazines at their stores.

After he was refused service, Fulton filed a lawsuit, saying Dick’s policy violates Michigan’s Elliot-Larsen Civil Rights Act, which prevents age discrimination. The lawsuit seeks $25,000 in damages and a repeal of the company policy. Tristin Fulton is the nephew of Joel Fulton, co-owner of Battle Creek's Freedom Firearms and a vocal supporter of gun rights; requests for comment were directed to Tristin Fulton's attorney in this lawsuit, Jim Makowski.

This lawsuit is not the first over new gun sale policies; just this week, a 20-year-old Oregon man filed one.