Bore Brush Set

A bore brush set groups the attachments that clean one bore diameter: a phosphor bronze brush, a cotton mop and, in most configurations, a brass jag or slotted tip. GUNNIX sizes every piece in a set to the same caliber and the same thread standard, so each attachment screws onto one cleaning rod without adapters. The format suits shooters who maintain a specific firearm and replace worn pieces one at a time instead of reordering a full case of tools. Each set ships with the caliber engraved on every brass base, which keeps sizes sorted in a range bag.

Bore Brush Sets for Different Firearms and Calibers

Sets are listed by bore size, since one brush size serves every cartridge of that diameter. A single .30 caliber brush at 0.308 in cleans .308 Winchester, .30-06 and 7.62 NATO alike. The range runs from 0.172 in at the .17 end to 0.729 in for 12 gauge.

Tips on How to Choose the Right Size

• Thread by firearm type – 8-32 on rifle and pistol pieces, 5/16-27 on shotgun pieces, 5-40 on .17 hardware.
• Bore diameter – printed on each product page next to the cartridges that size serves, from 0.172 in at the small end to 0.729 in for 12 gauge.
• Fit – bristles reach the grooves only at the matching diameter, and an undersized brush passes over the rifling without contact.
• Marking – the caliber is stamped into the brass base of every caliber bore brush set and identifies the size on the bench without packaging.

Types of Bore Brushes Included in a Set

Contents vary by barrel type. Rifled bores take a pointed jag, which presses the patch into the grooves. Smooth shotgun bores take a slotted tip and larger patches instead. Packs are built from 4 component types, in four-piece, three-piece and two-piece configurations. Two-piece packs carry the brush and mop alone, for owners who already hold patch hardware in that size.

Components stocked in the packs:

• Bore brush – phosphor bronze bristles on a brass core wire. Lifts carbon, lead and copper fouling after the solvent has softened it. A consumable item.
• Cleaning jag – solid brass, pointed. Holds the patch against the rifling through the full stroke, which gives the tightest patch contact of any carrier.
• Slotted tip – brass, with a slot that takes the patch. Supplied in shotgun packs and used for repeated solvent passes.
• Bore mop – 100% cotton on a brass base. Applies solvent before brushing, dries the bore afterwards and carries the storage oil film.

Bore brush set configurations:

• Four-piece – brush, jag, mop and slotted tip. The full sequence for one rifled caliber.
• Three-piece – brush, jag and mop in rifle and pistol calibers; brush, slotted tip and mop in 12 gauge, where a smooth bore takes no jag.
• Two-piece – brush and mop, in calibers where patch hardware is bought separately.

Why Choose GUNNIX Bore Brush Sets

Materials

• Bristles – phosphor bronze. Lift baked carbon, rimfire lead and lube, plated copper and the wad plastic left near a shotgun choke.
• Core wire and base – brass. Brownells advises brass-core brushes for general use, since a steel core can scratch the muzzle crown on withdrawal.
• Jags and slotted tips – machined from solid brass.
• Mops – 100% cotton on a brass base. Cotton holds more solvent than synthetic fibre and tolerates a barrel still warm from shooting.
• Bore contact – no part of the assembly that enters the bore is bare steel.

Warranty and service

• Warranty – one year limited on the brass hardware, dated from the warranty card in the box.
• Exclusions – brushes, as consumable items.
• Dispatch – within 1 business day.
• Delivery – 2–5 business days across the continental US.