Hi, all.
Yesterday afternoon I brought my 870 Police (HD gun) to the range for a little practice. The first 10 or so shells went fine. Then the next 3 or 4 I had intermittent failures to fire. After that, it stopped firing at all. It appears that the slide is permanently unlocked. Loading a shell or not, and sending the forend forward does not lock the action. When pulling the trigger the hammer does not fall. And I noticed that it appears the slide release lever in the front of the trigger guard is stuck up (in the pressed position). I have not had time to disassemble the gun yet, but I wanted to check with the experts here first to see if you had any suggestions on diagnosis steps and resolution. Thanks for your time.
Chris