I went pending January 9th on a form 4 through an LLC for an AAC SDN6. I was able to pick it up June 29th but I think it sat at the dealer for a week before I got my hands on it. My last stamp for an sbr lower sometime last year was roughly a one month shorter wait. I just purchased an SS Sparrow so I'm praying the wait is slowly decreasing. Four months is very doable, six to seven months is very painful.