This costume is awesome. High quality PU leather and cotton. Includes shirt, jacket, cloak, tie, vest, gloves, wrist, hat, shoulder armor, belt, leg bag, and pants.
You can find the costume on Amazon here.
A great wig for the costume can be found here.
If you’re looking to complete the costume, you’ll need the rifle. You should check out Senpai3D for their awesome cosplay props.
You can get the Viper Rifle on Etsy here.
You can find the boots here.