J. Dewey Brass Handgun Jag (Male Thread 8-32) .40/10mm

The J. Dewey Brass Handgun Jag (Male Thread 8-32) for .40/10mm is a precision bore-cleaning component engineered for serious shooters who demand accuracy and reliability in firearms maintenance. Designed and manufactured by J. Dewey Mfg. Co., Inc.—a name trusted across law enforcement and military communities for over four decades—this brass jag represents the gold standard in handgun cleaning rod accessories.

Constructed from high-quality brass, this jag features a male thread configuration (8-32 standard rod thread) that accepts standard .40/10mm caliber patches with precision fit and minimal wobble during the cleaning stroke. Brass construction is critical in bore maintenance because it will not scratch or damage hardened steel barrel rifling—a risk that exists with steel or aluminum jags used carelessly. The tapered design ensures patches seat properly and release cleanly, preventing fiber buildup that compromises cleaning efficiency.

This jag is purpose-built for shooters maintaining .40 Smith & Wesson and 10mm Auto handguns—two calibers prevalent in duty carry, concealed carry, and competitive shooting. The compact length and lightweight design make it ideal for field kits, range bags, and tactical cleaning systems where weight and space are operational considerations.