I suspect you'd sell quite a few of these once the XCR-M comes out.
I have probably 15 or so already but will get more once the XCR-M comes out. The magazines are listed as 20 rounders, but in reality, until they're well broken in they are 19 rounders.
When new, getting the 20th round in is impossible. Once well broken in, the 20th round can be used. I leave my new ones loaded at 18-19 rounds depending on how many I can get in for a month or so when I first get them. This helps when using them for the first time, then eventually, you'll find you can get the 20th round in there.
When the XCR-M comes out I'll buy another 5-10. That is once I get my XCR-M.
I'm very pleased that Alex is going to use the KAC/DPMS mags. The original KAC magazines are very expensive though so the DPMS are the way to go.
PM or email me with your price for the DMPS mags. I'd like to know.