Brownells Standard Line Brush, Nylon, 20 Gauge Shotgun, 12 Pack

Keeping a shotgun barrel clean is non-negotiable if you want reliable shot patterns and longevity. The Brownells Standard Line Brush in nylon for 20 gauge shotguns gives you a no-nonsense cleaning tool that stands up to modern aggressive bore cleaners without compromising your bore. This 12-pack bulk offering is designed for shooters and gunsmiths who know that having extras on hand beats running out mid-session or waiting for a reorder.

The nylon bristles are the key here. While they're tough enough to scrub away fouling, they won't leave the micro-scratches that can affect accuracy—a real concern when you're working with potent copper and bronze solvents. The steel shank is built as a single piece, looped and wound for durability rather than twisted and cut, so you get a brush that won't fail mid-stroke.

Whether you're a competitive shotgunner, a dedicated hunter cleaning gear between seasons, or a gunsmith managing multiple 20-gauge jobs, this 12-pack keeps you supplied without the repeated hassle of small orders. Thread with any standard 5/16"-27 male rod or handle, and you're ready to work.

Key Features

• Nylon bristles compatible with modern aggressive bore cleaners
• Single-piece, looped and wound steel shank for reliability
• 12-pack bulk quantity—ideal for frequent cleaning or shops
• Won't scratch bore walls or affect shot patterns
• Standard 5/16"-27 male thread fits most cleaning rods

Specifications

Gauge	20
Bristle Material	Nylon
Shank Material	Steel, looped and wound
Overall Length	2-7/8" (7.3 cm)
Thread Size	5/16"-27 male
Quantity per Pack	12

Frequently Asked Questions

Will these nylon brushes work with strong copper solvents?

Yes. Nylon bristles are designed to resist aggressive modern bore cleaners that attack copper and bronze fouling without degrading or shedding bristles the way older brush materials can.

What's the difference between a looped-and-wound shank and a twisted shank?

A looped and wound shank is formed as a single piece of steel, making it more durable and less prone to failure. Twisted shanks (made from two pieces twisted together and cut) are more fragile and more likely to separate under stress.

Can I use these with my standard cleaning rod?

Yes, if your rod or handle accepts a 5/16"-27 male thread. This is the standard thread size for most shotgun and rifle cleaning rods.

Why buy a 12-pack instead of individual brushes?

Bulk packs reduce cost per brush and ensure you always have backups on hand. For hunters, competitive shooters, or gunsmiths who clean frequently or manage multiple firearms, having extras eliminates downtime between cleanings.