M1 Carbine, M1 Garand Rifle Barrel Cleaning Bore Brush Stainless Steel 3-pack. .30 Cal Stainless Steel Bore Brush For heavy lead fouled or rusted M1 carbine rifle bores or great for just quicker cleaning. 30 Cal. Bore Brushes thread for direct threading into Cleaning Rods. Fits All Standard US Rifle/Pistol Cleaning Rods. Great for M1 carbine, M1 Garand .30 Cal. Winchester 30/30 and more rifles.