Minifigs Russian Artillery regunned

I bought some Blue Moon 10 lb Unicorns to replace the guns of my Minifigs. They are more in proportion to my Old Glory Guns.

Minifigs Russian Artillery

These are pre 1812 Russian Artillery. I really like these figures from Minifigs. They are true 15mm. Next to Old Glory figures they look fine. Since most of my figures are Old Glory and Blue Moon they will look good. The guns are way too small. I will have to swap them out. The difference in size between the Old Glory guns and the Minifigs guns will bother me.
The AB figures are large 18mm and really look odd next to the Minifigs.