Hi TpwUK,
I specialized on concept design of real pistols and what I can say,



Also as I understood it is concept but it is practically identical to original, what is your innovation or new ideas?

What about modeling, it modeled well for concept but edges are very sharp it has to be filleted. I understood that it is very hard to make that cosmetic fillets in MoI but try to use some types of shaders to make virtual fillet for example you can make it in KeyShot. But best result is when edges are filleted in 3D.