I wont take the credit on this find...but thought it useful here since its the cheapest way to get a new complete bcm lower.....it is a blem...but its a bcm, which means good luck finding the blem. For a comparison g&r tactical carries these at $345 for a blem model.
https://lanbosarmory.com/index.php?main_page=product_info&cPath=24_53&products_id=30905
Props to @ajsawyer for posting it elsewhere
https://lanbosarmory.com/index.php?main_page=product_info&cPath=24_53&products_id=30905
Props to @ajsawyer for posting it elsewhere