Breakthrough Clean Technologies® Nylon Bristle Bore Brush - .410 Bore, Brass Core Product Features • GUN CLEANING BRUSH: This .410 bore brush features a #5/16-27 thread, rugged brass core and stiff nylon bristles to attack heavy carbon build-up in your firearm. Our gun brush is a handy accessory to add to your shotgun cleaning kit. • NYLON BORE CLEANER: One of the best things about our gun brushes is that they don't scratch when cleaning and maintaining your guns. It's crafted with a highly dura
