The B.O.N.E.? Tool was designed specifically to clean the bolt carrier assembly area of .223 cal./5.56MM rifles.

MSR/AR owners know the importance of a clean bolt and bolt carrier group. Carbon and fouling can build-up in these areas, causing jams and malfunctions. The B.O.N.E.? Tool was designed specifically to clean the bolt carrier assembly area of .223 cal./5.56MM rifles. designed specifically to clean the bolt carrier assembly area of .223 cal./5.56MM rifles.