Download a compiled version of the model here:
https://www.dropbox.com/scl/fi/agwvuitjmdrm1oy79942p/smg_new.7z?rlkey=t6sibljc9k4kx6tz9mfjfh0h3&dl=0
And download the obj files / uncompressed TGA files here:
https://www.dropbox.com/scl/fi/y2a9nbkb6eyb13wdqi6z8/hl2-models-uncompressed.7z?rlkey=qf41wjsr6kzl8eiopum4ok9s2&st=oztp1q0m&dl=0