http://www.legislature.mi.gov/documents/2011-2012/billengrossed/House/pdf/2012-HEBH-5499.pdf
Note the SBS/SBR ban and transport restrictions they don't think need to be cleaned up.
For the SBS/SBR restrictions, they merely opted to clarify that C&R's will no longer need to be registered as pistols. What pricks.
1 Sec. 224b. (1) A person shall not manufacture, sell, offer for
2 sale, or possess a short-barreled shotgun or a short-barreled
3 rifle.
4 (2) A person who violates this section is guilty of a felony
5 punishable by imprisonment for not more than 5 years or a fine of
6 not more than $2,500.00, or both.
7 (3) This section does not apply to the sale, offering for
8 sale, or possession of a short-barreled rifle or a short-barreled
9 shotgun which THAT the secretary of the treasury of the United
10 States of America, or his or her delegate, under 26 USC, sections
11 5801 through 5872, or 18 USC, sections 921 through 928 931, has
12 found to be a curio, relic, antique, museum piece, or collector's
13 item not likely to be used as a weapon. , but only if the person
14 selling, offering for sale or possessing the firearm has also fully
15 complied with section 2 or 2a of 1927 PA 372, MCL 28.422 and
16 28.422a
Edit to add- the line through the text used in the link to cross out certain portions of the text from the bill, it didn't transfer with the copy and paste, nor do I know how to do that effect. But it can be seen in the link.