I am surprised at your comment "as usual no response to emails". Surprised only because my experience it has been just the opposite. Although I have only purchased from IBI/Ultimatum 3 or 4 times, I have written at least twice that many emails and have had them responded to promptly each time. The phone call I made yesterday afternoon to actually order the bolt was answered on the first ring . I received email confirmation of the order immediately via email.
IBI/Ultimatum is a relatively small company. They have enjoyed a tremendous growth over the last couple of years both here in Canada and Internationally. They have made significant improvements to production and efficientcies to accommodate the increased volume. I can imagine the difficulties in acquiring additional staffing with the necessary skills to increase production without sacrificing quality. It is also my understanding that there are TWO people who look after all of the marketing, advertising and sales.
I cannot suggest why your apparent multiple emails have gone unanswered but I can say that as far as barrels are concerned IBI is delivering most barrels in several weeks as opposed to the several months of many of the other manufacturers. I can also say with confidence that the two IBI barrels that I do own I am very please with and I am contemplating trying one of their 14 twist rimfire offerings.
Having only ordered my bolt yesteday, I expect it will be a couple of weeks for it to arrive ( may be delayed by a pending mail strike ). On it's arrival I will be sure to respond to this thread with my comments and findings. I wish you the best of luck with your inquiries.
Regards,
Dan