
Availability: In Stock
Lucas Oil Extreme Duty Gun Oil in gallon size is a heavy-duty lubricant built for shooters who run their firearms hard and often. Whether you're cycling thousands of rounds through an AR platform, maintaining a suppressed rifle, or keeping a collection of semi-auto and bolt-action guns in fighting trim, this is the oil trusted and recommended by major firearms manufacturers. It's engineered to handle the extreme conditions that multi-purpose gun oils simply can't—high heat, high friction, full-auto cycling, and the carbon-heavy environment inside suppressors and gas tubes.
What sets Extreme Duty Gun Oil apart is its resistance to the problems that wreck gun performance: it won't run off your bolt carrier or migrate away from where you need it, thanks to a unique additive package that keeps it in place. The polymeric film it leaves behind protects against rust and moisture while actively resisting the buildup of carbon, lead, and copper fouling—meaning less time scrubbing, faster cleaning cycles, and less wear on critical parts over the life of your firearms. Apply it to bores, bolt carriers, gas pistons, suppressor baffles, flash hiders, and muzzle brakes; it'll stay where you put it and make your next cleaning session noticeably easier.
Extreme Duty Gun Oil performs across an exceptional temperature range, from -38°F to 400°F, so whether you're hunting in winter cold or running suppressed in sustained fire, thermal stability won't be a concern. It neutralizes acids from fingerprints and resists drying, making it ideal for long-term storage and protecting firearms in your safe. The gallon size is economical for serious shooters, competition shooters, and gunsmiths who go through lubricant regularly. It also works well for ultrasonic cleaning of small parts or bulk lubrication tasks.
One more thing: Lucas engineered this oil to resist blowback, so you won't get oil sprayed into your face or coating your optics during shooting—a small detail that makes a real difference when you're behind the gun.
| Product | Lucas Oil Extreme Duty Gun Oil |
| Size | Gallon |
| Temperature Range | -38°F to 400°F |
| Category | Firearms Lubricant & Protectant |
Yes. Lucas Extreme Duty Gun Oil is specifically designed for suppressor use, including on baffles, mounts, and muzzle devices. It resists carbon buildup and makes suppressor cleaning faster and easier.
Absolutely. While formulated for demanding conditions like full-auto and suppressed rifles, Extreme Duty Gun Oil is suitable for all semi-auto rifles, shotguns, and pistols.
Lucas Extreme Duty Gun Oil operates reliably from -38°F to 400°F, making it suitable for extreme cold-weather hunting and high-heat sustained-fire shooting.
The gallon size is economical for serious and frequent shooters as well as gunsmiths and armorers who require regular lubricant supplies. A single gallon goes a long way for most applications.

SKU: 194195324 • Weight: 8.57oz





Availability: In Stock
Lucas Oil Extreme Duty Gun Oil in gallon size is a heavy-duty lubricant built for shooters who run their firearms hard and often. Whether you're cycling thousands of rounds through an AR platform, maintaining a suppressed rifle, or keeping a collection of semi-auto and bolt-action guns in fighting trim, this is the oil trusted and recommended by major firearms manufacturers. It's engineered to handle the extreme conditions that multi-purpose gun oils simply can't—high heat, high friction, full-auto cycling, and the carbon-heavy environment inside suppressors and gas tubes.
What sets Extreme Duty Gun Oil apart is its resistance to the problems that wreck gun performance: it won't run off your bolt carrier or migrate away from where you need it, thanks to a unique additive package that keeps it in place. The polymeric film it leaves behind protects against rust and moisture while actively resisting the buildup of carbon, lead, and copper fouling—meaning less time scrubbing, faster cleaning cycles, and less wear on critical parts over the life of your firearms. Apply it to bores, bolt carriers, gas pistons, suppressor baffles, flash hiders, and muzzle brakes; it'll stay where you put it and make your next cleaning session noticeably easier.
Extreme Duty Gun Oil performs across an exceptional temperature range, from -38°F to 400°F, so whether you're hunting in winter cold or running suppressed in sustained fire, thermal stability won't be a concern. It neutralizes acids from fingerprints and resists drying, making it ideal for long-term storage and protecting firearms in your safe. The gallon size is economical for serious shooters, competition shooters, and gunsmiths who go through lubricant regularly. It also works well for ultrasonic cleaning of small parts or bulk lubrication tasks.
One more thing: Lucas engineered this oil to resist blowback, so you won't get oil sprayed into your face or coating your optics during shooting—a small detail that makes a real difference when you're behind the gun.
| Product | Lucas Oil Extreme Duty Gun Oil |
| Size | Gallon |
| Temperature Range | -38°F to 400°F |
| Category | Firearms Lubricant & Protectant |
Yes. Lucas Extreme Duty Gun Oil is specifically designed for suppressor use, including on baffles, mounts, and muzzle devices. It resists carbon buildup and makes suppressor cleaning faster and easier.
Absolutely. While formulated for demanding conditions like full-auto and suppressed rifles, Extreme Duty Gun Oil is suitable for all semi-auto rifles, shotguns, and pistols.
Lucas Extreme Duty Gun Oil operates reliably from -38°F to 400°F, making it suitable for extreme cold-weather hunting and high-heat sustained-fire shooting.
The gallon size is economical for serious and frequent shooters as well as gunsmiths and armorers who require regular lubricant supplies. A single gallon goes a long way for most applications.
SKU: 194195324 • Weight: 8.57oz
