The model is only 800 some odd poly its just a few boxes/ cylnders shaped to fit ,
to tell you the truth i modeled it in about 3 1/2 hrs , about 1/2 hr to get parts to fit , some vert edits and cut poly in non needed areas. If i was to go accurate
would be around 10 more hrs of constant messing with it {useing this ref only that is} . Textures 4-6 years for that quality i think .
Edit i was sent this ref {pic} just after i posted the reply here, this wip took little under 90 min too bad speed modeling isnt a real job someone needs .