How to do getchildren cframe for all models?

I'm attempting to make light beams but for some reason the CFrame only moves one model. Heres the code:

local model = script.Parent.Parent.Parent.Parent.Rigs:getChildren() 
while true do
	for c = 1, #model do
for i = 0,400 do
	model[c]:SetPrimaryPartCFrame(model[c]:GetPrimaryPartCFrame() * CFrame.fromEulerAnglesXYZ(0,1,0)) 
	wait()
end
end
end

On line 3, it only gets one model. Therefore, it only moves one.