What thread fitting does the Pro-Shot 12 Ga Mopster use, and will it fit my existing cleaning rod?

The Pro-Shot MPS features a standard American #5/16-27 shotgun thread fitting built on a solid brass core. If you are using standard US-pattern cleaning rods from brands like Pro-Shot, Dewey, or Hoppe's, it will screw on directly. Australian shooters using metric-threaded rods, such as Parker-Hale patterns, will need a 5/16-27 rod adapter to ensure a correct fit.

Can I use this cotton mop to scrub out heavy lead deposits and baked-on plastic wad fouling from my shotgun barrel?

No, the Pro-Shot Mopster is designed for light cleaning, applying solvents, and spreading final coats of oil rather than heavy scraping. For severe carbon build-up, lead deposits, or baked-on plastic wad fouling, you should use bronze or brass wire bore brushes prior to running this 10-inch cotton mop through the barrel.

How does the 10-inch working length of the Mopster improve shotgun barrel cleaning between rounds at the range?

The extended 10-inch working length of the 100% cotton fill provides full-coverage swabbing of 12 gauge shotgun barrels in fewer passes compared to standard short mops. This makes it highly efficient for quick in-field wipe-downs and applying foaming lubricants during trap, skeet, and sporting clays competitions.

12 Ga Bore Mop - Pro-Shot MPS

The Pro-Shot 10-Inch Mopster 12 Gauge Long Cotton Bore Cleaning Mop (Model: MPS) is a specialised maintenance accessory designed to clean and lubricate shotgun barrels in fewer passes. Featuring an extended 10-inch working length and a 100% thick premium cotton fill, it absorbs gun solvents and generates a foaming action that evenly coats the internal bore surface. Built with a solid brass core, this cleaning mop protects steel barrel interiors and choke tube threads from scratches during maintenance. It attaches directly to standard American shotgun cleaning rods via its industry-standard #5/16-27 thread fitting.

Key Features

Extended 10-Inch Coverage: The 10-inch (approx. 25.4 cm) working length swabs out 12 gauge shotgun barrels in fewer passes than standard short mops.
100% Cotton Fill: Deeply absorbs solvents and generates an even, foaming coat of gun oil across the entire internal bore.
Protective Solid Brass Core: Eliminates the risk of scratching internal steel bore surfaces or damaging delicate choke tube threads.
Standard Threading: Equipped with an American standard #5/16-27 shotgun thread for compatibility with standard US-pattern shotgun cleaning rods.

Product Specifications

Working Length: 10 inches (approx. 25.4 cm)
Gauge Compatibility: 12 Gauge
Thread Fitting: #5/16-27 thread
Core Material: Solid brass
Mop Material: 100% premium cotton fill
Operation: Manual (unpowered)

Who is the Pro-Shot 12 Ga Mopster Long Cotton Mop for?

Clay Target Competitors — Delivers fast in-field barrel wipe-downs between rounds of trap, skeet, or sporting clays by using its extended 10-inch working length to clear loose residue in minimal passes.
Shotgun Owners Preparing Firearm Storage — Evenly distributes protective gun oils across the entire 12 Gauge bore using dense 100% cotton fill to provide complete surface coverage before putting firearms away.

Less suitable for: Shotguns chambered in smaller bores such as 20 Gauge, 28 Gauge, or .410 bore where the 12 Gauge mop is oversized, as well as barrels with heavy lead deposits, severe carbon build-up, or baked-on plastic wad fouling that require a bronze or brass wire bristle bore brush.

SKU	PS41347LP
Model #	MPS
Brand	Pro-Shot
Shipping Weight	1.0000kg

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Pro-Shot Mps 12 Gauge Long Cotton Bore Mop 10 Inch

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