Keeps solvents from dripping into action and preventsexcessive cleaning rod contact with the rifling lands closestto the chamber. ? Three interchangeable chamber tips to fit .17to .416 caliber. ? Aluminum action collar fits .695"/.700"(17.65mm/17.78mm) diameter boltactions of any action length. ? Threaded brass pin locks the guide into the actionin place of the bolt to allow proper cleaning fromthe breech.
