Then there shouldn't be an issue.
Well except there’s no 15 rounders available. Those spacers are really a poorly executed fix for S&W knowing mags wouldn’t be available for some time.
I didn’t wait all this time for a g19 sized M&P just to make it a full size M&P with the 17rd mags. But if anyone buys a M&P 9mm 2.0 compact and wants to run 17rd spare mags I will buy a 15 rounder for $75.00 lol.