Try this...
1) Conceptual design ( artist sketch on paper/ hand draw ) for all races = 3 weeks
2) Model that concept design with simple wire frame/few texture for ALL RACES = 3-4 weeks
3) Detailed sculpture for 3D model for all race = 2 months
4) Texture creation and lightning = 2 Months ( can start after #3 finish for 1 month )
5) Apply armor physic and touch up = 2 months

I think it's reasonable timeframe for their design effort. I'm not sure what is the real development lifecycle for make new gear is but I'm sure for 1 things.... there are 8 races to make and that's why it take time a lot.

Try imagine above work yourself before complain....