Revell of Germany had two A-109's but both are discontinued. IIRC, one is the K2, and the other one is a KM. I ordered the KM about a month ago from Hobbytron.com (no affiliation), and they somehow got one for me (it wasn't in stock). I just looked on Ebay, looks like there are 10 or so spread out among three eBay Stores.
Edit: Sorry I didn't make it clear, but the stuff on Ebay were KM's.
HTH,
Austin