This is the Doom Eternal pistol that was scrapped from the game unless using cheat codes to access it.

It comes in many parts and has a movable secondary hand grip as seen in the screenshots.

It comes in the file formats of .blend .fbx and .stl. I havent uploaded it as .obj because i find it takes up too much space and messes with slicing times but i can do .obj if you require it.

I must stress scaling before printing as the scale can change depending on the software you use and it hasnt been scaled due to people having different hand sizes etc.