If the parts are really small, a laser might be better, because the probe tip would need to be much smaller than the smallest details.
But, a really good laser scanner can be extremely expensive.
Also keep in mind that resulting scanned data may need a lot of cleanup. I'd expect a fairly long learning curve to get really good at 3D scanning, and for best results, it will be expensive.
You could also use a scanning service like this.
Home