Mosin Nagant rifle 7.62x54r chamber brush for cleaning and maintenance of bore chamber brush. This Mosin cleaning rod bore brush is 7.62x54mm. 2-3/4" long. Accept Mosin Nagant Rifle cleaning rods found in the Mosin Nagant rifle and brushes found in mosin nagant cleaning kit. Note: If You need a Mosin Nagant Cleaning Rod we do have them for the Mosin Nagant rifles M38, M44, M91/59, M91/38, T53.