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Home → Accessories → Brushes → 5-Pack 20 GA Brass Bore Brush

5-Pack 20 GA Brass Bore Brush

In stock
SKU: BR-0001-020-p5
5-Pack 20 GA Brass Bore Brush
5-Pack 20 GA Brass Bore Brush
5-Pack 20 GA Brass Bore Brush
5-Pack 20 GA Brass Bore Brush
5-Pack 20 GA Brass Bore Brush
5-Pack 20 GA Brass Bore Brush
Product

5-Pack 20 GA Brass Bore Brush

In stock
SKU: BR-0001-020-p5
$12.50
$11.88

Packs

3-Pack
3-Pack
$7.27 $7.50
5-Pack
5-Pack
$11.88 $12.50
10-Pack
10-Pack
$23.00 $25.00
20-Pack
20-Pack
$44.00 $50.00

Available Options

.22 Caliber Brass Bore Brush
.22
$2.50
.357 Caliber / 9mm Brass Bore Brush
.357 / 9mm
$1.90
12 GA Brass Bore Brush
12 GA
$2.50
5.56mm Chamber Brush
5.56
$2.80
.45 Caliber Brass Bore Brush
.45
$1.90
.40 Caliber Brass Bore Brush
.40
$2.50
.30 Caliber Brass Bore Brush
.30
$1.75
.270 Caliber Brass Bore Brush
.270
$1.50
.243 Caliber Brass Bore Brush
.243
$2.00
20 GA Brass Bore Brush
20 GA
$2.50
.17 Caliber Brass Bore Brush
.17
$1.60
.410 Caliber Brass Bore Brush
.410
$2.70
.50 Caliber Brass Bore Brush
.50
$1.90
.25 Caliber Brass Bore Brush
.25
$2.00
.28 Caliber Brass Bore Brush
.28
$2.30
16 GA Brass Bore Brush
16 GA
$2.50

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Keeping a 20-gauge barrel clean takes the right size brush. This 20 GA brass bore brush fits the 20-gauge bore precisely, removing carbon, plastic wad fouling, and lead residue without scratching. The phosphor bronze bristles do the scrubbing - and because bronze is softer than barrel steel, your bore stays untouched even after years of regular use.

The 20 gauge is the second most popular shotgun gauge in the US - and growing fast. Shooters choose it for lighter recoil: upland bird hunting, youth firearms, long days at the range, and increasingly for home defense. The smaller bore (0.615" vs 0.729" on a 12 gauge) means fouling has less room to spread, so regular bore cleaning matters just as much.

Pair this shotgun cleaning brush with bore solvent, run a few passes after each session, and your 20 gauge stays reliable. Bronze bore brushes have been the standard gun cleaning tool for decades - trusted by gunsmiths and barrel makers alike.


Caliber:
20 GA
Product Type:
Bore Brush
Firearm Type:
Shotgun
Use Case:
Bore Fouling Removal
Bristle Material:
Phosphor Bronze
Core/Stem Material:
Twisted Wire (Brass)
Bore Diameter (in):
0.615
Thread Size:
5/16-27
Pack Size:
10-Pack, 20-Pack, 3-Pack, 5-Pack, Single
Country of Origin:
Imported (China)
Brand:
GUNNIX
What is the bore size of a 20 gauge shotgun?
A 20 gauge barrel has an internal diameter of 0.615 inches - noticeably smaller than a 12 gauge (0.729"). This means less surface area collects fouling, but the tighter bore makes consistent cleaning more important. A 20 gauge bore brush is specifically sized to grip these barrel walls for effective scrubbing.
How often should I clean my 20 gauge shotgun?
Clean the bore after every shooting session. The 20 gauge is popular for upland hunting and youth shooting, where lighter loads still leave behind carbon and plastic wad residue. If you shoot lead shot or slugs, clean sooner rather than later - lead fouling gets harder to remove the longer it sits in the bore.
Can a brass bore brush scratch or damage my barrel?
No. Phosphor bronze rates lower on the hardness scale than barrel steel. The bristles flex and conform to the rifling or bore walls, scrubbing fouling without contacting the metal underneath aggressively enough to leave marks. Your barrel outlasts hundreds of bronze brushes.
What is the best material for a shotgun bore brush?
Phosphor bronze is the standard for deep cleaning. It is stiff enough to break loose carbon, lead, and wad fouling without being hard enough to damage the bore. Nylon works for light passes and solvent application, but it lacks the scrubbing power needed when fouling has built up over several range trips.
After brushing, should I use a jag or a mop next?
Either works, but the technique differs. A jag with a tight-fitting patch pushes solvent through and wipes the bore walls in one stroke - it gives you a visual read on how much fouling remains. A bore mop absorbs more solvent and is faster for general cleanup. Many shooters alternate: jag with wet patches to dissolve, then a dry mop to finish.