Specially made for cleaning AR-15 and AR .308 rifles. Brushes are included for cleaning the upper receiver, bolt carrier, chamber and bore. Brushes are made from stiff, durable blue Nylex fiber that holds their shape through repeated cleaning and fit most 8-32 thread cleaning rods. Use recommended solvents, losso bore cleaner and losso triple action solution. Available: AR-15, and AR .308.