Hey Pirate: I believe you are wrong. From Day 1 in my fruitless quest to obtain what I wanted, there was a 45 changeover kit that was to be available; it just seems to have disappeared---probably because of tech problems. All sig has to do is tell me that and I would be disappointed but not outraged. When you spend big bucks you expect more than just the product from a supposedly respected company. Just go on the internet and prompt for the 45 changeover for the 250 and you will see vendors who talk about "not in stock", etc.