Brownells Brownells Brownells 75th Anniversary - A Shooting Heritage

Fast, Thorough Cleaning & Protection Of High-Performance Firearms

Non-abrasive, industrial-strength solvent has the power to remove the toughest copper fouling from any gun. The secret is its specially formulated ammonia oil that is strong enough to vaporize the stubborn copper fouling but safe enough to leave in the bore for up to an hour. Does not contain acids, amines, or chlorides that can etch the rifling.


Big Book Catalog, Issue:68, Page:347
Sinclair, Issue:5A, Page:143

SPECS: 6 fl. oz. (177 ml) or 20 fl. oz. (591 ml) bottle.

narrow your choices »
Show Filters
2 Item(s)
MONTANA EXTR 50 BMG COPPER KILLER 6 OZ
100-005-021WB
6 oz. Copper Killer
1000050216 oz. Copper Killer

Mfr Part: 07035

$10.49

Out of Stock

Size: 6 oz

MONTANA EXT 50 BMG COPPER KILLER 20 OZ
100-005-022WB
20 oz. Copper Killer
10000502220 oz. Copper Killer

Mfr Part: 07040

$25.99

Out of Stock

Size: 20 oz

MONTANA X-TREME™ COPPER KILLER