While there are no *known* (at least that I know of) prosecutions for 922(r) violations, disregard the 922(r) regs at your own peril.
922(r) applies specifically to what two posters in this thread are suggesting to do, i.e. change the magazine capacity without the appropriate number of 'Made in the USA' components to be in line with 922(r) compliance.
Also, no one should be advocating doing anything illegal on this forum regardless of one's opinion on the statute(s).