Hoppe’s Elite Copper Terminator – 4 oz (118 ml) Bore Cleaner

Hoppe’s Elite Copper Terminator is a specialised copper fouling remover and bore conditioner formulated to dissolve stubborn copper deposits inside firearm barrels more quickly and safely than many traditional cleaners. Part of the Hoppe’s Elite® line, it works independently or as part of a two-step cleaning system with Hoppe’s Elite Gun Cleaner to help keep your bore clean, accurate, and free of hard-to-remove copper buildup.

Key Features

Fast Copper Dissolution:
• Designed to break down “welded” copper fouling that clings to bore steel, making it easier and quicker to remove compared with many standard copper-removal formulas.

Ammonia-Free Formula:
• Uses a low-odor, ammonia-free chemistry that avoids leaving behind ammonia-type crystals, which can attract moisture and lead to corrosion or stress fractures.

Safe on Bore Steel:
• Engineered to be safe for bore steel surfaces, helping prevent damage while effectively loosening embedded copper deposits.

Non-Flammable & Easy to Handle:
• The liquid is non-flammable and non-toxic, with no shipping restrictions, making it convenient and safer to store and use than harsher solvent alternatives.

System Approach:
• Works well alone for copper removal or in combination with Hoppe’s Elite Gun Cleaner — the cleaner first removes carbon so the Copper Terminator can attack copper surfaces more effectively.

Technical Specifications

Performance & Practical Use

Copper from jacketed bullets can embed into the rifling and bore surface over time, degrading accuracy, increasing friction, and accelerating fouling. Hoppe’s Elite Copper Terminator is formulated to address this by dissolving copper residues efficiently — often up to four times faster than standard copper solvents — without aggressive ammonia fumes.

For best cleaning results, many shooters first remove carbon and general fouling with a cleaner like Hoppe’s Elite Gun Cleaner, then apply Copper Terminator to tackle copper deposits. After treatment, patches and brushes can more readily remove loosened material, helping restore bore condition and sustain accuracy.

Best Suited For

✔ Firearm owners dealing with copper fouling build-up in rifle or pistol barrels
✔ Shooters who want a less harsh, low-odor copper solvent
✔ Deep bore cleaning where standard carbon cleaners aren’t sufficient
✔ Use with other Elite products for a comprehensive cleaning system

User Tips

Prep First:
• Start by cleaning off surface carbon and powder residue — this exposes embedded copper to the Terminator’s action more effectively.

Follow With a Brush & Patches:
• After a short dwell time, run a bore brush and patches to remove dissolved copper and residue.

Ventilate & Protect:
• Even though the product is low-odor, use it in a well-ventilated area and wear gloves to protect skin during application.

Storage:
• Store upright in a cool, dry place away from direct heat sources.