What prevents copper cleaning solvents from turning the patch blue and giving false readings?

Unlike traditional brass jags that react with aggressive copper-removing solvents, the Pro-Shot Trace Eraser features a precision-machined aircraft-grade aluminum construction finished with a proprietary chemical-resistant secondary protective coating. This barrier stops chemical reactions between the jag and your solvent, ensuring that any blue or green discolouration on your patch comes strictly from barrel fouling.

Will this jag fit my standard cleaning rod or do I need a special thread adapter?

The 38/9TEJ features an industry-standard #8/32 male thread and will screw directly into standard Australian rifle and handgun cleaning rods featuring an #8/32 female receiver. It will not interface directly with small .17/.20 cal rods threaded #5-40 or shotgun rods threaded #5/16-27 unless you use a separate step thread adapter.

Which specific calibres are compatible with the 38/9TEJ jag?

This model is engineered strictly for bore internal diameters measuring .355 in to .358 in, making it ideal for .38 Calibre, .357 Magnum, .380 ACP, and 9mm Parabellum/Luger firearms. It is incompatible with smaller bores like .22 or larger bores like .40/10mm, which require appropriately sized dedicated jags.

9mm Cleaning Jag - Pro-Shot 38/9TEJ

The Pro-Shot .38 Cal. / .357 / 9mm Trace Eraser Spear Tip Cleaning Jag (MPN: 38/9TEJ) is a firearm maintenance tool designed to hold cleaning patches centered in handgun, pistol-calibre carbine (PCC), and rifle bores. Precision-machined from aircraft-grade aluminum, the jag is finished with a proprietary chemical-resistant coating that eliminates false copper fouling indications. Traditional brass jags react with copper-dissolving bore solvents to produce blue or green patch staining regardless of barrel cleanliness; the Trace Eraser coating prevents this reaction so that patch discolouration accurately reflects actual barrel fouling.

Key Features

False-Read Elimination: Coated aluminum construction prevents chemical reactions between the jag and aggressive copper-removing solvents, ensuring true patch readings.
Spear-Tip Design: Sharp forward spear point pierces and secures cotton flannel patches in the center of the bore, providing 360-degree contact with the rifling grooves without bunching or slipping.
Standard Thread Mounting: Fitted with an industry-standard #8/32 male thread for direct connection to standard rifle and handgun cleaning rods.

Specifications

Manufacturer Part Number (MPN): 38/9TEJ
Material: Aircraft-grade aluminum with proprietary secondary protective coating
Thread Pattern: #8/32 male thread
Bore Compatibility: Internal diameters from .355 in to .358 in (.38 Calibre, .357 Magnum, .380 ACP, 9mm Luger/Parabellum)
Weight: Under 25 g

Who is the Proshot .38/.357/9mm Trace Eraser Jag for?

9mm Handgun and Pistol-Calibre Carbine Shooters — requires precise patch contact in bores measuring .355 in to .358 in, using this spear-tip cleaning jag to apply copper-dissolving solvents without generating false blue-green surface readings.
.357 and .38 Revolver Marksmen — utilizes standard #8/32 male thread rods to center cleaning flannel against .357 in to .358 in cylinder chambers and barrel rifling for deep cleaning cycles.

Less suitable for: Firearm bores outside the .355 in to .358 in diameter range (including smaller .17, .22, 6mm, 6.5mm, 7mm, and .30 calibres, or larger .40, 10mm, .44, .45, and .50 calibres), which require smaller or stepped-up dedicated calibre jags. It is also unsuitable for direct attachment to #5-40 threaded small-bore rods or #5/16-27 threaded shotgun rods without a step thread adapter.

SKU	PS41267LP
Model #	38/9TEJ
Brand	Pro-Shot
Shipping Weight	1.0000kg

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Pro-Shot 38/9tej Cleaning Jag 9mm Spear Tip

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