Excellent for treating chambers, cylinders, and barrels, or use for pin point accuracy oiling. You can use one drop exactly where you need it, without all the mess. Great for those otherwise unreachable areas with traditional applicating methods. Next Generation of Cleaner and Barrel Maintenance is here! Environmentally Friendly and Non-Hazardous Formula leaves barrels Totally CLEAN & PROTECTED in ONE EASY STEP! Removes: Lead, Powder, Plastic, Copper (Jacketed), and Primer Fouling Makes gun bores and actions easier to clean. Lubricates and Protects: Rust inhibitors and special additives soak into the metal and provide a corrosion barrier for superior rust protection. Synthetic Synergistic Blend: Super proprietary formula lessens fouling/residue buildup with repeated use. Here's how to use 1 Step: 1) Saturate the bore or chamber area 2) Let Penetrating Agents work and sit for 10-15 minutes.You can even let it set overnight in a gun vise if wanted. 3) Run Brush through bore/chamber area and bust fouling loose. 4) Finish with a jag and dry patches. Clean all saturation and fouling out. No need to finish with an oil as 1 Step has rust inhibiting and corrosion protection additives!