DEMO Otis Technology 5.56mm MSR/AR B.O.N.E. Tool Black FG-246. O.N.E. Rifle Cleaning Tool 246 has been designed specifically to clean the bolt carrier assembly area of .223 cal./5.56MM rifles. Carbon and fouling can build-up in the bolt and bolt carrier causing jams and malfunctions and this Rifle Cleaning Tool from Otis Technology will make sure that that doesn't happen. Note: While the Otis BONE Rifle Tool fits many bolts flawlessly it may fit some bolts better than others due to variance in bolts by different manufacturers. Specifications for Otis Technology MSR/AR B.O.N.E. Tool: Manufacturer: Otis Technology Quantity: 1 Length: 5 in Threads per Inch: 8-32 Gun Type: Rifle Features of Otis Technology MSR/AR B.O.N.E. Tool Designed specifically to clean carbon & fouling from the bolt carrier assembly area of MSR/AR style rifles Scrapes carbon and fouling from the bolt bolt carrier and firing pin Package Contents: Otis Technology MSR/AR B.O.N.E. Tool Otis Technology FG-246: 5.56mm MSR/AR B.O.N.E. Tool Black