re: Yes, and the middle aluminum part is the machining needed.
Note how many bearings this suit uses.
There are at least 14 seals including the rear entry and helmet attachment.
You know Airlock will probably get the job because they can claim tooling and experience. But, to my eye it seems anyone able to mill about a 65cm oval to about 16cm deep could do the job. Probably want preffy tight tolerances as well.