Here's my version of 1999 lego blaster. Scaled to fit a persons hand. Stud should fit on, but it may require sanding or glue.

 For some reason printables doesn't like the stud file, so just download it from my thingiverse page, https://www.thingiverse.com/thing:5510198

If you like my work and would like to support it and future projects, you can buy me a Ko-Fi(though I am more of a tea person), https://ko-fi.com/reprops