Hoppe's Universal Bore Guide

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Keeps bore cleaners from dripping into action and prevents excessive cleaning rod contact with the rifling lands closest to the chamber.

Three interchangeable chamber tips to fit .17 to .416 caliber
Aluminum action collar fits .695"/.700" (17.65mm/17.78mm) diameter bolt actions of any action length
Threaded brass pin locks the guide into the action in place of the bolt to allow proper cleaning from the breech