Product Description
Reliable, Copper-Free Cleaning with the Bore Tech Proof Positive Patch Jag
The Bore Tech Proof Positive Patch Jag eliminates false copper fouling, a common issue with traditional brass jags. Designed from a proprietary alloy, this jag contains zero brass—yet maintains the strength and softness needed for safe, precise bore cleaning.
Thanks to its 100% brass-free design, you’ll spot real copper fouling, not misleading blue stains from brass reactions.
Enhanced Performance from Every Angle
Each Proof Positive Patch Jag features two sets of four contact rings for maximum patch grip and bore contact. Rounded lead rings align the jag smoothly, while squared rings secure the patch in place.
Additional benefits include:
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Precision-machined tolerances for consistent fit
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Reverse taper to protect the barrel crown
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Extra solvent reservoir between ring sets
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Caliber-specific lengths to prevent patch bunching
Why Choose the Proof Positive Patch Jag?
This jag delivers clear results while protecting your firearm. The smooth transition between jag and rod eliminates edge drag and helps center the rod during cleaning.
With fewer wasted patches, less chemical use, and no false fouling signs, cleaning becomes faster and more accurate—every time.






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