:: Ooops.  I made an edit on this.  I wrote "The last thing we see is Michael, pointing the gun at himself (his arm or side), and firing."  I tend to prefer statements of what we actually see if the conclusion (e.g. he shot himself) isn't shown.  Sure, pointing the gun at yourself and the sound of gunfire seems to add up to "shot myself", but since we aren't shown the result of the gunfire, we don't know that it happened.  Arguably, the gun could have misfired or he could have missed.  Bypass the whole issue be describing what is shown.