Does anybody have any recent experience with the Fleming .22 conversion kit for the Cobray or MAC M11/9, MAC-10, and similar weapons? This is the replacement barreled upper that uses Ruger 10/22 magazines feeding in through the side. Here's a link. www.subcal.com www.subcalmarketing.com I had one years ago, and it was junk. I returned it with an angry letter and they gave me my money back. But I still like the idea of such a kit. I just want the darn thing to be properly machined and polished so that it will work. I see they're on the market again, for twice the price that I paid 15 years ago. Maybe for the higher price they've built them right? I'm almost ready to take the chance again. Has anybody else?