The 1500 is almost becoming an AR-15 show. If you can't find parts and kits that you are looking for, they don't exist. At the January show, there were Bushmasters all over the place. If you can't get a good deal on one already built, there are all the parts makers, like Model 1 and J&T Distributing, and a bunch of others. Build one yourself!
I'd love to build one, actually two, a varmiter (maybe .204) and a carbine. I'm kinda nervous about it though not knowing much about them. I do intend to have those two by the end of the year.