JSE has the new 40 round p-mags in stock and their not all that pricy either. about $18.90 a pop i think.
i have a few c-product and cmmg 40 round mags i got before the last panic. i have used them some and the seem to work fine --i like the c-products/ASC 40s--
these p-mags if they run like thir 20s and 30s should be the hot set up in the big cap mags--
you know you want one! if for no other reason the democrats/communist and socialist don't want YOU to have um!