There is indeed an embargo - so new Baikals are getting harder to find. I have an MP-153, its proven to be very reliable. Swing weight is a bit wonky, as the barrel is quite heavy. I understand the MP-155 has a lighter barrel. f memory serves the MP-155 cannot accept 3.5 in shells, but the MP-153 can. Don't know if that's a step forward? (3.5 in shell capability is not an important consideration for me)