The BROWNELLS DOUBLE-TUFF™ bore brush is designed with extra-thick, kinked, phosphor bronze bristles for intense scrubbing action on tough bore crud.
It is compatible with rifles, with a 3.25" long brush that uses 8-32 male threads for .54 and .58 caliber, and 10-32 male threads for 50 caliber (.510).
The brushes are made to not scratch bores while effectively removing stubborn carbon deposits.