Bore Tech Proof-Positive Nylon Rifle Brush .50 CAL

Bore Tech Proof-Positive Nylon Rifle Brush .50 CAL

The Bore Tech Proof-Positive Nylon Rifle Brush .50 CAL features double-wound, extra-rigid nylon bristles tailored to .50 caliber bores, mounted on a non-brass core with aircraft-grade aluminum stud, ensuring compatibility with aggressive copper-removing solvents without producing false copper fouling indications. Its design makes it safe for repeated passes through the barrel while delivering effective scrubbing action and preserving barrel integrity. The brush is available as a single-pack or three-pack.

Key Features

Caliber: .50 CAL
Bristle Material: Extra-rigid Nylon, double wound
Core Material: Non-brass alloy with looped end (no sharp ends)
Thread Stud: Aircraft-grade aluminum (male 8/32 thread for most calibres; 5/40 for .17/.20 cal) — for .50 CAL uses 8/32
Barrel Safe: Yes — non-brass core avoids false copper fouling when used with copper-removing solvents
Pack Options: Single pack or 3-pack
Range of Use: Calibres from .17 up to .50 CAL (this unit: .50 CAL)

All Technical Data

Supported Caliber: .50 CAL (others available .17 to .50 CAL)
Thread Size: Male 8/32 (for .50 CAL and most calibres; 5/40 only for .17/.20 CAL)
Core Construction: Double-wound, non-brass alloy with looped ends
Bristle Density: Double the amount of bristles vs standard brushes for stronger scrubbing per pass
Availability: Single pack (1) or 3-pack

Why Choose This Product?

The Bore Tech Proof-Positive Nylon Rifle Brush .50 CAL offers an excellent cleaning solution for rifle barrels without the drawbacks of traditional phosphor-bronze brushes — no risk of false copper fouling signals, and less chance of damaging the barrel’s crown or bore. Its durable nylon bristles and robust core provide effective scrubbing even with aggressive solvents, making it a reliable choice for shooters, reloaders, and anyone maintaining rifles from .17 up to .50 caliber.