Besides the shield and the beam rifle the GAT-01 has a parachute pack, I didn't made the cockpit as well. Proportions are easy to spot wrong on multiple points, guessing measurements from references with perspective has been a mayor trouble, having them exact without a flat illustration is too difficult and troublesome, however I had a flat lateral comparation of a different model, it seems more or less correct on deep and height, width is noticeable lacking on the legs and feet, then I was avoiding running into other mechanical problems which I still don't well undertstand, core and shoulder height might as well be smaller, core frontal extrusion likely goes inwards to the center (diagonally).
Like with other gundams other variations and counterparts exist, on the far side the GAT-01D Long Dagger and GAT-01D1 Duel Dagger, the GAT-01A1 Dagger and GAT-01A2R Slaughter Dagger being more similar, this last unlike the Strike Dagger and the rest is compatible with all of the GAT-X105 Strike configurations and equipment, overall it looks to be a new model rather than a simple variation.
The model has flat colour texture mapping, following the illustration in which is based on, not that I had any choice I don't know much about how gundams' texturing is made but I have seen it being mostly similar smooth darker on the edges then softening on the center both denoting the edges as well as helping to simulate or hide smoothed faces (something I would like to not have deal with), this shield for example there should use texture.
There is not much I could learn from the GAT-01A2R, I would have to deal with proportions as well, the GAT-X105 has those prententious legs and head the -01 was an easier choice, and the 01A2R is free of both. I might look into making a simple ship, or the Freedom Gundam which is also pretty blocky and has most equipment already attached, there are also RX-121 line from Advance of Z which are pretty blocky as well but relay on different armors which I prefer to avoid, except the head is more similar to that of the X105 which would still be new to me, also the Heavy Arms Custom also looked interesting.
I doubt I can manage to port this to FS2, this seems to even refuse to be ported to other formats, likely it looks better ingame with better shadowing and specular.