I bought mine straight from IBI. I wanted to be 100% sure I knew what I was getting. It's not a big deal buying from Canada, just takes a little longer to get here going through customs.Dd you order the IBI 457 barrel from someone in the USA? I've heard ordering barrels from Canada is a major PIA. I thought they were only doing the EPS, 52D chambers. I will be interested in hearing how the Califee 4 chamber works out, hopefully equal or better than the 52D on your T1x.