This model is kind of special for me. I spent several months in Korea last year on an extended work trip. I got to go to a Gundam Base for the first time and knew that I had to get at least one Gundam Base limited model as a souvenir. Among all of the MG size and translucent models I found the one Gundam that I enjoy with my HG/RG mono-eye loving heart. Of course, they released the GBK-20 two months after I got back to the states, but alas.
The model build was pretty standard fare for an HG. The Caletvwlches were more involved than I expected, each of the 3 being a whole sprue worth of parts unto itself. Getting the dual-handed hold on the dual blade S mode was difficult enough that I almost gave up.