I have to agree it is a good idea to check stocks before you order.  When I checked with SIG, they had the LT-40s in stock but not the Mid Star 40s so I found an online shop that had both and got them shipped!  They weren't going to be in stock for 3 weeks and I couldn't be bothered waiting.  You might be lucky if the Mid Star 40s were going to be ready at the end of this month then the 4 Star 20s might be ready by the same time?

Hope you get your kit soon anyway!