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Hoppe's Unversal Bore Guide. Keeps solvents from dripping into action and prevents excessive cleaning rod contact with the rifling lands closest to the chamber.

Threaded brass pin locks the guide into the action in place of the bolt to allow proper cleaning from the breech.

• 3 interchangable chamber tips to fit .17 to .416 caliber
• Aluminum action collar fits .695"/.700" diameter bolt actions