Description
The Bore Tech 6mm 40" Cleaning Rod is part of the Proof-Positive Bore Stix line, which sits at the top of Bore Tech's coated rod lineup. It's a one-piece rod sized specifically for .243 and 6mm bores, and it's a genuine step up if you've been getting by with a segmented rod or a generic universal kit. The caliber-specific steel core keeps flex and bowing to a minimum, so the rod tracks straight down the bore instead of dragging against the rifling and lands.
What Sets the Bore Tech 6mm Bore Stix Apart
The headline feature is the non-brass Proof-Positive tip. If you clean with copper-removing solvents, a brass tip can trip a false blue reading on your patch and make you chase fouling that isn't there. This tip solves that, so the color you see is the real story of what's coming out of your barrel. The tip is also female-threaded and interchangeable, which means you can swap between jags and brushes without adding an adapter every time.
The Handle That Does the Work
The cushioned, free-floating handle rides on stainless ball bearings, letting the rod rotate on its own axis and follow the barrel's twist rate. In plain terms, that keeps your jag or brush from unscrewing mid-stroke and keeps the rod from side-loading against the throat. The rubber grip is comfortable in the hand and won't chew up your stock if it bumps against it. There's also a handy index dot at the base of the handle for checking your rifle's twist rate.
Threading and Fit for the 40" Rod
This rod runs an 8-32 female thread, which is the standard for centerfire rifle jags and brushes, so it plays nicely with most aftermarket accessories in that pitch. The 40-inch working length suits standard rifle barrels well, and remember that overall length runs longer than the working length once you add the handle. The low-friction coating is chemically resistant and built to hold up to solvents over years of use. Do keep the rod wiped down and use a bore guide when you can, which is good practice with any coated rod.
Key Specifications
- Manufacturer: Bore Tech
- Manufacturer Part Number: BSTX-6640-00
- UPC: 667739966405
- Line: Proof-Positive Bore Stix
- Caliber/Gauge: .243 / 6mm (.243)
- Working Length: 40 inches
- Thread: 8-32 female
- Core Material: Caliber-specific steel
- Coating: Low-friction, chemically resistant
- Tip: Non-brass Proof-Positive, replaceable
- Handle: Free-floating ball bearing with rubber grip
- Style: Rifle
- Country of Origin: USA
What’s Included
- Bore Tech 6mm 40" Proof-Positive Bore Stix one-piece cleaning rod with ball bearing handle
Frequently Asked Questions
What calibers does the Bore Tech 6mm 40" cleaning rod work with?
It's built specifically for .243 and 6mm bores, and the same rod diameter covers up to .270 caliber. Using a caliber-specific rod keeps the shaft properly sized to the bore so it doesn't slop around or drag on the rifling. If you shoot several calibers, you'd want the matching Bore Stix rod for each bore range.
Why does the Bore Stix have a non-brass tip?
Traditional brass-tipped rods can react with copper-removing solvents and leave a blue tint on your patch, which fools you into thinking there's more copper fouling in the barrel than there really is. The Proof-Positive tip is made from a non-brass alloy that eliminates that false reading. What you see on the patch is the actual condition of your bore.
What thread size are the jags and brushes for this rod?
The tip is 8-32 female threaded, which is the standard for centerfire rifle jags and brushes. That means you can run most aftermarket 8-32 accessories on it, not just Bore Tech's own. The female tip also lets you swap between jags and brushes without needing a separate adapter.
Is 40 inches the full length of the rod?
No, the 40 inches is the working length of the shaft. Overall length runs longer once you factor in the handle, so plan for extra reach on the bench. The 40-inch length is a good fit for standard-length rifle barrels.





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