Why the bk rush ++ Jump/Break Cue is always out of stock?

Hi , I'm fond of the bk rush  + jump/break cue for a long time, although the normal bk rush break cue is good enough. I have been waiting for the cue in stock for quite a long time ,but it's always out of stock, out of stock, out of stock, :( I'm wondering  when I could get the chance to order this cue . 

Btw , are both of the bk rush  + jump/break cue's joints  uni-loc joints?  Is it possible that put the third sport wrap button with the shaft together?  Just curious:)

Thanks~!