.45 Caliber Brass Jag – Gun Cleaning Jag

20-Pack .45 Caliber Brass Jag

In stock

SKU: JG-0001-045-p20

20-Pack .45 Caliber Brass Jag

In stock

SKU: JG-0001-045-p20

$69.80

$59.33

Packs

Available Options

.45

$3.49

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⚠️ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

The .45 caliber covers more ground than most shooters realize - this brass jag fits the .45 ACP semi-auto, .45 Colt revolver, .45-70 Government lever gun, and .454 Casull. All fall within the .452"-.458" groove diameter range, so one gun cleaning jag services everything from a 1911 to a lever-action rifle. The pointed brass tip wraps the cleaning patch around itself and pushes it through the bore with full 360-degree wall contact, pulling fouling out on every pass.

The .45 ACP is the most popular large-bore pistol cartridge in the world. Range shooters often run 200 rounds in a session, and that volume produces a thick layer of carbon fouling and powder residue inside the barrel and chamber. The .45-70 faces a different challenge - heavy, slow bullets at black powder pressures leave lead deposits in the bore that can affect accuracy after just a few dozen rounds. Both fouling types respond to the same jag-based bore cleaning approach: solvent on a patch, push through, let it work, then dry patches to wipe clean.

For semi-auto .45 ACP guns, pay attention to the chamber and feed ramp - run a jag-wrapped patch into the chamber entrance to clear carbon that causes feeding issues. For the .45-70, use 2.5" patches. Gun cleaning on big-bore pistol and rifle cartridges is simple when you have the right brass jag for the job.

Caliber:

.454 Casull, .45 ACP, .45 Colt

Product Type:

Jag

Firearm Type:

Pistol, Revolver

Use Case:

Final Patch Cleaning

Jag Material:

Brass

Tip Style:

Pierce

Bore Diameter (in):

0.451

Thread Size:

8-32

Pack Size:

10-Pack, 20-Pack, 3-Pack, 5-Pack, Single

Country of Origin:

Imported (China), Made in USA

Brand:

GUNNIX

A .45 caliber jag fits firearms with a .451-.458 inch bore: .45 ACP, .45 Colt (Long Colt), .45 GAP, .454 Casull, and .45-70 Government. Many manufacturers label this jag ".44/.45" because the adjacent bore diameters (0.429" and 0.452") are covered by the same product. Check the stamped caliber on the jag to confirm.

The slotted tip that comes in most basic kits threads a patch through a slot - the patch folds and contacts the bore unevenly. A jag centers the patch on a pointed tip so it wraps around the full circumference with even pressure. The result: a jag removes more fouling per pass and gives you a clearer read on bore condition. Basic kits include slotted tips because they're cheaper and more forgiving with patch size - but a jag is the upgrade that serious shooters make first.

A 2-inch to 2.5-inch square patch is standard for .45 caliber jags. The larger bore means more surface area to cover, so patches need to be bigger than you might expect. If you're using the same patches that came with a .30 caliber cleaning kit, they'll be too small - the patch will slide through without gripping the bore. Size up until you feel firm, even resistance.

On a 1911, the barrel comes out easily during field stripping - clean it separately. Push the jag through from the chamber end (breech) so fouling exits the muzzle. Cleaning a barrel while it's in the gun risks getting solvent into the action and doesn't allow proper breech-to-muzzle strokes. Remove the barrel, clean with a jag on a rod, and you get better results with less mess.

Durability and precision. Brass jags hold tighter machining tolerances, meaning the patch fit is more consistent shot-to-shot. Plastic jags are cheaper but flex under pressure, reducing bore contact. In .45 caliber, where the large bore diameter already makes tight patch fit harder to achieve, a rigid brass jag maintains the firm contact you need. Plastic jags also break more easily when pushing through heavy fouling.