You can purchase a M.2 external enclosure, or you are purchase the above PCIe M.2 adapter. Either one can be used to clone the M2. SSD. However, the PCIe M.2 adapter allows you easily use the old 128GB M.2 SSD inside your PC.
If you want to clone the M.2 SSD that is in a laptop, then you will have to buy a M.2 external enclosure.