I bought a new hammer from MOA and my M3K is running like champ. 200 rounds without a double. With the new hammer, the gap between the hammer hook and disconnect became practically nonexistent. The gap before the new hammer looked like Ryan's in the post above. The Stoeger part number on the bag Tom sent was 33414 with nomenclature of M3500 Hammer. In hind sight, filing the disconnector may have worked just as well. Thanks Tom.