Working version for 0.15.0, idkn does it work for 0.15.x versions.
Copied code from DevX's file to 0.15 file and edited to work with this version.
I also added line of code so you can make exotic rarity turret's.
(if you don't like possibility to build exotic turrets just delete 400th line of code rarityCombo:addEntry("Exotic"%_t))
I update it to 0.15 version, all credits go to original author.
HF
turretfactory.zip