Players will be able to craft gear equivalent to the first tier of endgame gear and slightly below each subsequent tier, but that gear will have no set bonus and not be modifiable. Crafters can, however, craft mods on par with that level of gear from plans received in Command Crates or by reverse-engineering existing mods. The crafted gear will never offer a set bonus, but it’s well within an acceptable boundary of performance with other gear, thus ensuring that crafters can help other players catch up with each new endgame goalpost.
Source: Official Site