The Pro-Shot J20B is a benchrest-quality spear point cleaning jag engineered specifically for .20-calibre rifle bores. Precision-machined from solid American brass, this non-powered cleaning tool threads onto sub-calibre cleaning rods to hold and centre cleaning patches during maintenance. Its brass construction is softer than barrel steel, allowing shooters to apply solvents, dry-patch, and clear fouling without damaging the delicate lands, grooves, or crown of small-bore precision rifles.

Key Features:

• Spear-Point Design: Features a sharp forward point that pierces and centres small fabric cleaning patches, preventing the patch from bunching or jamming inside tight bore tolerances.
• 360-Degree Bore Contact: Precision concentric rings and angled grooves behind the spear tip press the patch firmly against the lands and grooves across the entire circumference.
• Bore-Safe Solid Brass: Machined from brass to eliminate the risk of bore, throat, or crown scoring during routine cleaning passes.
• Permanent Calibre Stamping: The .20-calibre size is clearly stamped on the base of the jag for fast identification in cleaning kits.
• Solvent Resistant: Fully compatible with common gun oils and cleaning solvents.

Specifications:

• Calibre: .20 Calibre (.204 in / 5.2 mm)
• Thread Size: American Standard #5-40 male thread
• Material: Solid brass
• Length: Approximately 51 mm
• Weight: Under 10 grams
• Model/MPN: J20B

Who is the Proshot Spear Pointed Benchrest Jag 20 Cal for?

• Varmint shooters using .204 Ruger — Requires a bore-matched spear point cleaning jag tailored to .20 Caliber (5.2 mm) dimensions to ensure even patch pressure and complete fouling removal across high-velocity varmint rifle barrels.
• Benchrest precision shooters maintaining small-bore target rifles — Mounts directly via standard sub-calibre #5-40 male threads on a compact 51 mm brass body weighing under 10 grams, providing precise, jam-free patch alignment without risking rifling wear.

Less suitable for: Firearm platforms chambered in .17-calibre, .22-calibre, or larger bores, as well as setups relying on standard #8-32 female cleaning rods without a thread adapter; these applications require dedicated .17-calibre jags or standard #8-32 threaded cleaning jags sized to the specific bore diameter.