Nothing some basic CAD capability, access to a makerspace with a CNC machine, some bar stock, and some downloaded CAD models from one of many Internet CAD libraries with validated suppressor CAD models can't replicate.
Me either. That said, just because something is the law doesn't make it 'just' ... and the reality is that there ARE some unjust laws on the books AND there is an unjust organization called the ATF that is actively re-interpreting its previous interpretations because it a) can and b) believes it screwed up on those previous interpretations and now wants to hold individuals other than itself accountable for adhering to its past interpretations/guidance. While you're clearly not willing to stand up for what you may feel is just (because you feel it's not worth it), there are others whose calculus on the matter ends with a very different result ... and some of them are old men to whom life in prison (let alone 1 to 10 years) is relatively meaningless because they're about to kick over, anyway. Men such as that have little to lose or risk ... and much to gain for many others should they stymie or reverse an injustice.
Or, form 1 it and after approval utilize some basic CAD capability, download a CAD model from one of many Internet CAD libraries with validated suppressor CAD models, take some bar stock to your local subscription-based makerspace that has a CNC machine, place your bar stock in the machine, load your CAD model, and watch the machine spit out what you need (engraving and all after your basic CAD work is done) for you to assemble and smile at.
And the 'have a computer-driven machine do all the work to build it for you bandwagon'...