I had some observations about this project.
The White text on white backgrounds for your Headers is difficult to read. If the text or background (Text would be easier) was darker, it would help.
It seems impossible to injure people with light pistols? 1D6 will always fail the lowest toughness of 7. (Now I see Critical hits, but still.)
The ranges seem really arbitrary. Perhaps having Close, Near and Far would be more straightforward.