There seems to be some renewed interest in scope checkers. I guess the competition season is winding down and folks are gearing up for the off season/ equipment verification - a wise move. Perhaps the best $200 you can spend in this sport/ hobby. Lower assemblies here: https://fieldandcaveoutfitters.com/...-c-s-2018-picatinny-scope-checker-lower-mount Upper plates here: https://fieldandcaveoutfitters.com/...c-s-2018-picatinny-scope-checker-upper-mounts Everything in stock and will ship within a day or two of receiving the order. Good shootin'!