Mont. Code Ann. § 70-15-205
Remainder limited upon fee tail valid -- vesting
70-15-205 . Remainder limited upon fee tail valid -- vesting. When a remainder in fee is limited upon any estate that would by the common law be adjudged a fee tail, the remainder is valid as a contingent limitation upon a fee and vests in possession on the death of the first taker without issue living at the time of the first taker's death.