The regular versions aren’t locked it’s just a grind to level to unlock them it’s the Adept versions that are locked behind the flawless mechanic. You can get ia regular version weapon if you really want it but it will be a grind , but once unlocked u can then start fun farming for a roll using the engrams. I’m not great at trials but over the 4 days take my beatings and get enough XP to level to unlock the new weapon if I want it. If u want bow better just fill up bounties and grind probably won’t be fun at all but you can get it if u really want it .