Need CAD work for handgun accessory. Updating the "HK USP Match" of Laura Croft fame.

Building a handgun accessory called a Match Weight. I have a 3D scan of the firearm and a photoshop mockup of the part to be created. I have a version of this part for an older handgun, Ill take whatever pictures you need. Need someone to do the cad work. 60 – 70% of the surface area is just a “Copy and Paste” of the end of the firearm. The rest is pretty straight forward with the following style notes: The newer firearm has slots that the screws can go into, moving them up slightly from the older weight. I want to keep the “cooling fins” from the original weight. I want the bottom of the weight smoothed out with a little curve to it. I want the sides of the weight to mimic the end of the handgun, forward serrations included. The weight will round off into the trigger guard. The finished product should be a step file that I can send out for CNC milling. The HK USP Match was discontinued in 1989. In 2002 it was featured in Laura Croft Tomb Raider and became popular again, but no new ones were made by HK. I am making the weight to turn the current model HK handgun into an updated HK Match. Expecting a quote somewhere between $100 and $300.