The chamber should be cleaned periodically with the chamber cleaning brush. The following procedure is used with the rifle assembled and the bolt locked back and the safety on. Apply a light coating of bore cleaner into the chamber, insert early issue combo tool chamber brush into chamber. Work the brush back and forth in a twisting motion several times to scrub the chamber. Remove the brush from the chamber. Use a clean patch to wipe the chamber. Repeat with clean patches until patches come out clean. Do not oil chamber as chamber was designed to operate dry.
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