Otis Bore Brush Set – .17 HMR / .177 Cal / .17 WSM, 5-40 Thread, 1" Brush Length, Bronze & Nylon (2-Pack)

Keep tiny bores shooting true with a brush set built specifically for small-diameter rifles. The Otis Bore Brush Set for .17 HMR / .177 Cal / .17 WSM delivers the ideal combo of bronze and nylon bristles to tackle carbon, powder residue, and light metal fouling—without risking your rifling. Designed with the micro-caliber 5-40 thread and a compact 1-inch brush length, this 2-pack fits tight chambers and long barrels while pairing perfectly with Otis cleaning cables and compatible .17-caliber rods.
Model/MPN: FG317NB • UPC: 014895002346

Why this .17-cal brush set stands out

• Caliber-correct cleaning: Precisely sized for .172–.177" bores, including .17 HMR, .17 WSM, and .177-caliber rifles/air rifles where compatible.

• Two-brush system:

  • Phosphor bronze for confident scrubbing of stubborn fouling.

  • Nylon for gentle cleaning, solvent application, and finish-safe follow-ups.

• Micro 5-40 thread: Standard threading for .17-caliber accessories ensures a secure fit to small-bore rods and Otis Memory-Flex® pull cables.

• Compact 1" brush length: Shorter brush section helps you navigate tight twists, crowns, and narrow bores with better control.

• Durable, deformation-resistant core: Each brush features a corrosion-resistant shank and crimped bristles to keep density uniform, session after session.

• Pack-ready 2-per package: Keep one bronze and one nylon in your range kit for quick switch-ups between aggressive and finesse passes.

Key features at a glance

• Caliber: .17 HMR / .177 Cal / .17 WSM (0.172–0.177")

• Brush types: Phosphor Bronze (1) + Nylon (1)

• Threading: 5-40 (micro-caliber standard)

• Brush length: 1 inch (brush section)

• Packaging: 2 per package

• Model / MPN: FG317NB

• UPC: 014895002346

How to get the most from your Otis brushes

1. Unload & verify clear. Always start with a safe, empty firearm.

2. Apply solvent (optional). Moisten the nylon brush to distribute cleaner through the bore.

3. Scrub with bronze. Run the bronze brush breech-to-muzzle to lift carbon and light metal fouling.

4. Follow with nylon. Use the nylon brush to sweep loosened debris and apply a protectant if desired.

5. Finish with patches. Run caliber-matched patches until they come out clean.

Tip: For best results, maintain a breech-to-muzzle direction to push fouling out the crown, not back into the action.

Compatible platforms (examples)

• Rimfire: .17 HMR, .17 WSM, .17 Mach 2

• Airgun / pellet (where compatible): .177-caliber rifled barrels

• Centerfire .17 (check dimensions): .17 Hornet, .17 Rem, .17 Fireball
  Always confirm bore size and rod/cable compatibility before use. Avoid forcing brushes through constrictions or ports.

Built for precision barrels

Small bores amplify the effects of fouling. This Otis set pairs phosphor bronze bristles—ideal for attacking carbon—with nylon for solvent application and finish-friendly sweeping. The 1-inch brush length and 5-40 thread make it easy to manage long, slender bores without flexy overhang, while maintaining positive contact with the lands and grooves.

Care & maintenance

• Rinse brushes in mild solvent after sessions; shake dry.

• Do not reverse direction mid-bore—exit fully before changing direction to preserve bristle set.

• Replace brushes when bristles appear matted, shortened, or uneven.

• Store in a dry pouch to prevent contamination with grit.

Specifications

• Caliber Fit: .17 HMR / .177 / .17 WSM (0.172–0.177")

• Bristle Types: 1× Bronze, 1× Nylon

• Brush Length: 1"

• Thread: 5-40 (male)

• Quantity: 2 brushes per pack

• MPN: FG317NB • UPC: 014895002346

SEO-friendly summary

Otis Bore Brush Set FG317NB—.17 HMR / .177 Cal / .17 WSM, 5-40 thread, 1" brush length, bronze + nylon—delivers caliber-correct, two-stage cleaning for tiny rifle bores and compatible airgun barrels. UPC 014895002346.

Natural keyword variations

Otis .17 caliber bore brush set; .177 rifle cleaning brushes; 5-40 thread bronze nylon brushes; .17 HMR brush 1" length; .17 WSM cleaning brush kit; FG317NB 014895002346; small-bore rifle cleaning accessories; nylon and bronze gun bore brushes.

What’s in the package*

• (1) Phosphor Bronze .17/.177 brush (5-40)

• (1) Nylon .17/.177 brush (5-40)

*Packaging and color may vary by lot.

Safety note: Always verify the firearm is unloaded before cleaning. Use appropriate solvents and follow your firearm manufacturer’s maintenance guidelines.

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