hmmmmm... good question. the laws have changed so rapidly, it's tough for even us to keep up! I believe the law is 18" if the barrel has not been altered and if it came from the factory as such.I also believe it must conform to a minimum overall length as well. I know that the contender is prohibited because it can be bought as a legal firearm, but can be converted to a pistol cal. and shortened. not a problem to bring pretty much anything rifle wise across the border, just a fee and a little paperwork in advance. any specific questions feel free to ask.