I was a Beta Tester for Sam's/Practical Solutions M10 Shockwave Z Mag Adapter. (For a picture see Post #47, because idk how to post pics via the goofy URL method here, sorry. ) The black carbon fiber printed adapter looks great and is of top quality, just like all of Sam's products and Master MACSmith services. I found it worked flawlessly with my new 30rd magazines. The 50rd Shockwave mags had to down loaded 5-7 rds. to function, again there were all brand new mags. ? BTW, Do you guys have issues with the 50rd. mags?
I believe Sam's new M10 adapter is an awesome must have item for your Lage M10 31 & 31k uppers; especially for the folks that already have a ton of the original Shockwave mags. Yes Richard/Lage Mfg. has started making his modified new SW mags, which I'm sure will be Perfect as well... but we now have two (2) pure win-win choices from the two very best MAC Family (Title II) Innovative manufacturers!
My disclaimer: I have no, none, zero financial interest or compensation from Sam/Practical Solutions or Richard/Lage Mfg.