The turrets can be placed in Creative mode and work fine, but in Survival, when placed and weld them by hand the game crashed just before the turret changes build state to finished model. I used the Nanite Control Factory mod and they weld up with all resources but the build state model does not finish and no game crash. When welding by hand this can be found in the log after crash:

2017-04-15 12:32:11.988 - Thread: 1 -> Exception occured: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
at SpaceEngineers.Game.Weapons.Guns.MyLargeInteriorTurret.OnModelChange()
at Sandbox.Game.Entities.MyCubeBlock.UpdateIsWorking()
at Sandbox.Game.Entities.MyCubeBlock.ComponentStack_IsFunctionalChanged()
at System.Action.Invoke()
at Sandbox.Game.Entities.MyComponentStack.CheckFunctionalState(Boolean oldFunctionalState)
at Sandbox.Game.Entities.MyComponentStack.set_BuildIntegrity(Single value)
at Sandbox.Game.Entities.MyComponentStack.UpdateBuildIntegrityUp()
at Sandbox.Game.Entities.MyComponentStack.IncreaseMountLevelInternal(Single mountAmount, MyConstructionStockpile stockpile)
at Sandbox.Game.Entities.Cube.MySlimBlock.IncreaseMountLevel(Single welderMountAmount, Int64 welderOwnerPlayerId, MyInventoryBase outputInventory, Single maxAllowedBoneMovement, Boolean isHelping, MyOwnershipShareModeEnum sharing)
at Sandbox.Game.Weapons.MyWelder.Weld()
at Sandbox.Game.Weapons.MyWelder.Shoot(MyShootActionEnum action, Vector3 direction, Nullable`1 overrideWeaponPos, String gunAction)
at Sandbox.Game.Entities.Character.MyCharacter.ShootInternal()
at Sandbox.Game.Entities.Character.MyCharacter.UpdateShooting()
at Sandbox.Game.Entities.Character.MyCharacter.UpdateAfterSimulation()
at Sandbox.Game.Entities.MyEntities.<UpdateAfterSimulation>b__d(MyEntity x)
at VRage.Collections.MyDistributedUpdater`2.Iterate(Action`1 p)
at Sandbox.Game.Entities.MyEntities.UpdateAfterSimulation()
at Sandbox.Game.World.MySector.UpdateAfterSimulation()
at Sandbox.Game.World.MySession.UpdateComponents()
at Sandbox.Game.World.MySession.Update(MyTimeSpan updateTime)
at Sandbox.MySandboxGame.Update()
at Sandbox.Engine.Platform.Game.UpdateInternal()
at Sandbox.Engine.Platform.Game.RunSingleFrame()
at Sandbox.Engine.Platform.FixedLoop.<>c__DisplayClass1.<Run>b__0()
at Sandbox.Engine.Platform.GenericLoop.Run(VoidAction tickCallback)
at Sandbox.Engine.Platform.Game.RunLoop()
at Sandbox.MySandboxGame.Run(Boolean customRenderLoop, Action disposeSplashScreen)
at SpaceEngineers.MyProgram.Main(String[] args)
2017-04-15 12:32:11.989 - Thread: 1 -> Hiding window
2017-04-15 12:32:11.989 - Thread: 1 -> Hiding window done
2017-04-15 12:32:11.989 - Thread: 1 -> Showing message