What did you expect, every crit-based secondary in the game has the exact same build. Expel mods are interchangeable depending on what faction you plan on fighting. if you are wandering Creeping bullseye is better than primed pistol gambit since its way easier to get has less capacity cost, its way more cheap to rank-up and offers more crit chance at the cost of fire rate which gets counteracted by [Lethal Torrent] anyway