before your modification it wasn't possible to fit a universal turret, but the locked ones worked.
now i wanted to place a locked and it displayed this
25579.549 Error MainLoop.cpp:1435: Exception at tick 10273374: Le mod Universal Turret (2.0.12) a engendré une erreur non récupérable.
Merci d'informer l'auteur de cette erreur.
Error while running event uniturret::on_built_entity (ID 6)
LuaItemStack API call when LuaItemStack was invalid for read.
stack traceback:
[C]: in function '__newindex'
__uniturret__/control.lua:845: in function <__uniturret__/control.lua:828>