OK Guys,
There is legislation that has passed the Senate HB 760, 761, 762. It will not pass until sometime next year, but it WILL eliminate the "Michigan Pistol". You MUST have all "Michigan Pistols" registered by January 1, 2012 to keep them as pistols. There will be NO MORE after that date. There is a grandfather clause in the bill that sets this date. It does not matter when the law finally passes and gets signed, the grandfather clause sets the date. It can only be changed if the bill goes all the way back to the beginning and gets placed before the Senate, which is unlikely to happen.
I purchased a pistol grip Remington 870 and built another exact one and registered them today. I had to stand in line in Oakland County, and most gun stores I called looking for parts are in short supply. I think you can just register the receiver and build it later, but you need to do it before January 1, 2012.
The other thing is the SUB 2000 IS a Michigan Pistol. It IS under 30" and has to be registered that way. I have some and carry them in the trucks all the time, but until Jan 1, 2012 they are a pistol in Michigan and must be registered as such. I bought mine from Williams and they would only sell with RI-60 and CPL or Purchase Permit. After Jan 1, 2012 they will be just rifles and MAY NOT be carried loaded in your vehicle.
Ken