Bore Tech Proof-Positive Rifle Jag – .308 Cal / 7.62mm (8/32 Thread)

The Bore Tech Proof-Positive Rifle Jag for .308 Cal / 7.62mm is a precision-engineered cleaning jag designed to eliminate the false copper fouling readings that plague traditional brass jags. With an 8/32 thread pitch and a proprietary brass-free alloy, this jag gives shooters a true, accurate read on bore cleanliness — so you stop wasting patches, solvents, and time.

Why Go Brass-Free?

Traditional brass jags contain over 60% copper. When paired with copper-removing bore solvents, that copper content bleeds a false blue color onto your patches — even when your barrel is already clean. Bore Tech’s Proof-Positive Jag is 100% brass-free and 100% barrel-safe, so the only copper you’re seeing on your patch is the copper actually coming out of your bore.

Advanced Dual-Ring Design

Each jag features a dual set of 4 contact rings for maximum patch grip and bore coverage. The first ring in each set is rounded to self-center the jag in the chamber and bore, reducing the risk of crown damage. The three remaining rings in each set feature a squared face to securely hold the patch in place during the cleaning stroke. The relief space between ring sets acts as a solvent reservoir, retaining and dispensing fresh solvent ahead of the second ring set for a more thorough, efficient clean.

Crown-Safe Reverse Taper

A reverse taper at the rear of the jag ensures a smooth, edge-free transition between the jag and cleaning rod — especially when used with Bore Tech Proof-Positive Bore Stix rods. This design centers the jag in the bore and lifts the cleaning rod off the barrel floor on the return stroke, protecting your muzzle crown from unnecessary wear.

Precision Machined to Spec

Machined to strict tolerances, the Proof-Positive Jag delivers true, concentric pressure on the bore surface for consistent, effective cleaning. Jag length is caliber-specific, preventing patches from bunching or jamming at the tip of the rod.

Specifications

• Caliber: .308 Cal / 7.62mm
• Thread Pitch: 8/32
• Diameter (A): 0.245 inches
• Length (A): 2.645 inches
• Material: Proprietary brass-free alloy with secondary treatment process
• SKU: GAS|BORBTAJ3000

Stop second-guessing your bore cleanliness. Order the Bore Tech Proof-Positive .308 Rifle Jag today at VanTon Arms and experience a smarter, more accurate approach to rifle maintenance — shipped fast, nationwide.