Rgriesbeck -- I've been researching this piece for days. I'm glad to see that you got the "basket weave" of the barrel cover correct. Many 3D models online do not get this right. I just watched several videos on YouTube of Adam Savage with the original props, so I'll throw in my two cents...
According to the prop master for the original 2049 film, the basket woven pieces are actually all separate pieces. So... if you were selling these in a kit, my humble suggestion is that you rework your 3D model so that those pieces are all separate. One could therefore just create one and multi print them so you have enough pieces to make up the gun barrel cover.
Your thoughts?