cr12

Hello folks, as you can see I'm new to the forum. Been checking it out and have seen some very helpful posts on here.... My question is, has anyone actually found and installed a 4 shot mag extension and limiter for an SBE II. I have talked to "customer service" and they say that it will not be available until next year. I have gotten conflicting info from them before though. I have been on several websites and have only found them listed for the SBE I. Seems as though I have seen another post where someone has been successful in ordering one. Any help would be appreciated.