"They have no proper use here," says J.D. Belden, owner of Cabot Gun and Ammo.
Belden first came across Dupo 028 rounds when a customer brought them into his shop. They are made in Latvia and are sold online.
Belden did a test two weeks ago, firing a 12-gauge round into a protective vest that had a "trauma plate" tucked in the back. The round went through the front layer and back layer, leaving a golf ball size dent in the metal plate.
KARK did a similar test without the metal plate. The foreign made shotgun slug easily went through both layers of the vest.
Law enforcement is concerned.
"When they come out with these rounds that can easily defeat our body armor it's very unsettling," says Lt. Carl Minden with the Pulaski County Sheriff's Office.