Summary

Adding a barrel extension has tighten the salt pattern.

Can use 4" or 5" length of 1/2" copper pipe. Lube & split 5/8" automotive hose. Be careful installing hose on bug-a-salt barrel. Electricians tape shown is to cover existing holes.
Excessive force will require a person to dissamble the gun for repair. Site can be installed on top or bottom.

Scale for your needs....