SHOTGUN: RADIKAL ARMS MODEL NK-1, SERIAL NUMBER 21RB-05300, BLACK (MATTE), CASE NOT INCLUDED, 18.5, 12 GAUGE, SEMI - AUTOMATIC Notes: The Radikal NK-1 is a semi-automatic shotgun offering a practical design for range use, sporting applications, and general shotgun enthusiasts. This model features a modern appearance and straightforward controls. great for home defense. with flip up iron sights and 1 10 rnd mag