Breakthrough Clean BT17NBB Nylon Bristle Bore Brush .17 Cal #5-40 Thread

The Breakthrough Clean BT17NBB is a .17 caliber nylon bristle bore brush built to scrub heavy carbon fouling from small-bore firearm bores. Its rugged brass core anchors stiff nylon bristles that attack stubborn build-up without damaging the bore surface, making it a dependable addition to any firearm cleaning kit.

Cut to fit cleaning rods with the standard small-caliber #5-40 thread, the BT17NBB is sized for use in .17 caliber firearms. Pair the brush with a quality bore solvent to break up carbon and fouling, then follow with patches to leave the bore clean and ready for accurate shooting.