I have a temporary order against the abuser. Can his/her gun be taken away?
As part of a personal protection order case, a judge can specifically order that the abuser not buy or have a firearm in his/her possession. So, if this is ordered in your temporary protection order, the abuser cannot legally have a gun.1
However, if there is no specific mention of a firearm restriction in the temporary protection order, then it may still be legal for the abuser to have a gun under Michigan state law.
1 MCL § 600.2950(1)(e)