Dewey Grenade Launcher Cleaning Kit

The Dewey Grenade Launcher Cleaning Kit is a field-tested cleaning solution purpose-built for military-issue M203 40mm grenade launchers and 37mm variants. Whether you're maintaining a launcher in service, at the range, or in the field, this kit gives you the right tools to keep your tube clean and functioning reliably. The two-piece aluminum cleaning rod breaks down into 8-inch and 14-inch sections, designed to pack light and move easy without sacrificing reach or durability.

Built around a heavy-duty phosphor bronze brush that cuts through carbon fouling and stubborn residue, this kit includes a cotton mop for applying solvents and rust preventives to maintain barrel integrity between shoots. The 5/16"-27 female threads also make the rod compatible with short-barreled riot shotguns, adding versatility to your cleaning kit without extra weight. Aluminum construction keeps the whole setup portable—critical when you're working in the field and every ounce matters.

Replacement brushes and mops are available separately, so you can extend the life of your cleaning kit and swap in fresh components as needed. This is the kind of straightforward, no-frills gear that does one job and does it well—exactly what you need for maintaining military-spec or specialty firearms.

Key Features

• Two-piece aluminum rod breaks into 8" and 14" sections for compact field transport
• Heavy-duty phosphor bronze brush removes carbon buildup and fouling
• Cotton mop for applying solvents and rust preventives
• 5/16"-27 female threads compatible with M203 40mm and 37mm grenade launchers, plus short-barreled shotguns
• Replacement brushes and mops sold separately

Specifications

Frequently Asked Questions

What firearms does this cleaning kit work with?

The Dewey Grenade Launcher Cleaning Kit is designed for military-issue M203 40mm grenade launchers and 37mm variants. The 5/16"-27 female threads also allow it to be used with short-barreled riot shotguns.

Can the cleaning rod be used in the field?

Yes. The two-piece aluminum rod breaks down into 8-inch and 14-inch sections, designed for manageable transport and use in field conditions without sacrificing durability or reach.

Are replacement brushes and mops available?

Yes. Replacement phosphor bronze brushes and cotton mops are available separately, allowing you to refresh your cleaning kit as components wear.

What's included in the kit?

The kit includes the two-piece aluminum cleaning rod, a heavy-duty phosphor bronze brush for removing carbon buildup, and a cotton mop for applying solvents and rust preventives.