Siemens Designcenter/NX Models Needed

I need ready-made Siemens Designcenter/NX .prt files that I can buy and download today. The models must be native, fully parametric mechanical components—think moderately complex machines with a clear feature tree of sketches, extrudes, revolves, patterns and edits I can roll back through. Anything that shows up as an imported STEP/BREP body will be rejected.

If you already have assemblies or individual parts that fit those criteria send a .zip folder of your best, representative samples and the total quantity you have. I will review immediately and purchase the suitable sets on the spot. All purchasing closes today so we need to move fast.

Acceptance criteria:
• Siemens Designcenter/NX .prt files only, created natively (no neutral-file imports)
• Multi-level assemblies preferred, complex parts acceptable
• Complete, editable feature history
• Delivery via direct file transfer as soon as approved

Let me know what you can supply and how fast you can transfer the files. I’m ready to proceed right away.