Pro-Shot mops are made of the highest quality construction possible. Mops can be used for quick cleaning and bore lubrication. Mops are especially excellent when using oil for bore lubrication because they create a foaming action that helps in the lubrication process. They are available in 100% cotton and wool with a brass core.
All cotton mops have #8-32 thread couplings except the .17 cal.
All wool mops have #5/16-27 thread couplings – standard shotgun.