Keep your shotgun performing reliably with the SME Bore Rope Cleaner Knockout – 20 Gauge (GR203 / GMGR203), a fast, field-friendly cleaning solution designed to help remove residue and fouling from your barrel with minimal hassle. Whether you’re maintaining a hunting shotgun, a sporting clays setup, or a well-used field gun, this compact bore rope cleaner is built for quick maintenance at home, at camp, or at the range.
If you’re searching for a 20 gauge bore snake, shotgun bore rope cleaner, or a portable 20ga barrel cleaning tool, this Knockout bore rope delivers the convenience of an all-in-one pull-through system—ideal for routine cleaning between outings and for keeping your barrel in good condition when a full bench-cleaning kit isn’t practical.
Fast, Pull-Through Cleaning for 20 Gauge Shotguns
The SME Knockout Bore Rope Cleaner is designed specifically for 20 gauge barrels, helping you clean more efficiently than traditional patch-and-rod setups when you need a quick pass through the bore. The pull-through design allows you to feed the rope through the chamber end and draw it out through the muzzle end (following standard safe cleaning direction), helping remove loose residue in one simple motion.
That makes it a smart tool for:
Compact and Portable: Built for Field and Range
One of the biggest advantages of a bore rope cleaner is how easy it is to carry. The SME Knockout Bore Rope Cleaner is lightweight and packable, making it easy to keep in:
When you’re away from your bench, having a portable shotgun cleaning rope means you’re never stuck waiting to get home before you can do basic barrel maintenance.
Quick Maintenance That Helps Protect Your Barrel
Regular barrel maintenance is about more than just “looking clean.” Routine cleaning helps reduce residue buildup, supports consistent performance, and can make deeper cleaning sessions easier later on. Using a 20 gauge bore rope cleaner after use can help you:
Reduce powder residue and light fouling
Keep the bore clearer between thorough cleanings
Maintain your shotgun as part of a consistent care routine
It’s a simple step that fits easily into any shooter’s maintenance habits—especially for hunters who want to prep and store gear promptly after a day in the field.
Simple to Use, Easy to Store
The SME Knockout Bore Rope Cleaner is designed for straightforward use without complicated parts. Just run it through as intended and store it back in your kit. Because it’s a rope-style cleaner, it’s also easier to manage than a multi-piece rod setup when you’re short on space or time.
For many 20 gauge owners, this style of cleaner becomes the go-to for quick maintenance—while traditional kits remain useful for deep cleaning, detailed inspections, and chamber work.
Ideal For
20 gauge shotguns used for hunting, clays, and general range use
Shooters who want a fast pull-through cleaning tool
Anyone building a compact field cleaning kit
People who prefer quick upkeep between full cleanings
Product Details
Why Choose the SME Knockout 20 Gauge Bore Rope Cleaner?
When you want a simple, portable way to keep a 20 gauge barrel maintained, the SME Knockout Bore Rope Cleaner (GR203) is a practical addition to your cleaning setup. It helps you stay consistent with routine care, packs easily, and makes quick maintenance feel effortless—whether you’re cleaning at the tailgate, at the range bench, or back at home.
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