You might be able to special order the LRH in .45 but I wouldnt count on it they only advertise it in .50 and .52 and its only available with stainless barrel and laminated stock, either thumbhole or regular. I picked up a .52 LRH a few months back and have only had the chance to run 5 shots through it but one of those happened to put a pig on the ground a couple weeks ago so Im happy so far. I plan on running some more rounds through it either this weekend or next, Ill try to post some pics and the results