how to move a model and how to rotate?

When you make your model, make sure to set a primary part (this will be the part that moves everything, like a handle on a gun)

Now, use this script to move your model:

Model:SetPrimaryPartCFrame(CFrame.new(0,0,0)) --Put Custom CFrame here

--To rotate your model, use this part:

Model:SetPrimaryPartCFrame(CFrame.new(0,0,0)*CFrame.Angles(0,0,0)) 
--Same, but edit the Angles part (math.pi is the best to use for basic rotation)