Breakthrough Clean Technologies® Chamber Mop — .308 Cal / 7.62mm (AR-10), 79mm Length | Retail Packaging | Model BT-308CM-AR | UPC 855525007559

Give your AR-10 the chamber care it deserves. The Breakthrough Clean Technologies Chamber Mop (.308 / 7.62mm) is purpose-built to reach the tight, carbon-prone spaces of the AR-10 / 7.62 NATO platform. With a 79mm working length and dense 100% cotton pile, it’s the fast, efficient way to apply solvent, lift fouling, and lay down a thin, even coat of oil—leaving your chamber, shoulder, and lug recesses clean, dry, and ready for reliable cycling. Packaged in retail packaging to keep fibers protected, the BT-308CM-AR earns a permanent place in any .308/7.62 cleaning kit.

Why This AR-10 Chamber Mop Belongs in Your Kit

• AR-10-specific reach: The 79mm profile is tuned for .308 Win / 7.62×51 NATO chamber geometry, contacting the shoulder and lug recess areas where carbon loves to hide.

• High-absorbency cotton fibers: Thick, tightly woven pile holds solvent and oil exceptionally well for efficient application and pickup with fewer passes.

• Low-lint construction: Built to minimize stray fibers, helping you achieve a clean, professional finish without contamination.

• Gentle & durable: Bore-safe cotton is kind to chamber steel yet sturdy enough for repeated use—wash, dry, and re-use.

• Retail-ready protection: Clean, sealed packaging keeps the mop fresh in your range bag or armorer’s drawer.

Key Features at a Glance

• Platform: AR-10 and compatible .308/7.62 semi-auto rifles

• Caliber: .308 Win / 7.62×51 NATO / 7.62mm

• Length: 79mm chamber-reach length

• Material: 100% cotton mop head with robust core

• Primary Use: Solvent application, residue pickup, and final oiling of the chamber & lug recess

• Model / SKU: BT-308CM-AR (also listed as BT308CMAR)

• UPC: 855525007559

• Packaging: Retail packaging for clean storage and easy display

• Compatibility: Works with standard AR cleaning rods/adapters (verify thread with your rod system)

Cleaner Chamber, Better Reliability

A clean chamber directly supports smooth feeding and consistent extraction—critical for precision shooting and high-round-count training. The BT-308CM-AR’s dense cotton pile increases surface contact for faster solvent delivery and more effective residue removal, cutting your cleaning time while improving function.

How to Use (Best Practices)

1. Clear the rifle: Verify unloaded. Separate upper from lower; remove BCG and charging handle.

2. Solvent pass: Lightly saturate the chamber mop with a quality solvent. Insert from the rear and rotate through the chamber and lug recess to dissolve carbon.

3. Agitate (optional): For stubborn deposits, run a chamber brush, then repeat with the solvent mop.

4. Dry pass: Swap to a clean, dry mop to remove solvent and loosened debris.

5. Protective film: Use a dedicated oiled mop to apply a thin, even anti-corrosion layer. Avoid over-oiling that could migrate into the bore.

6. Reassemble & function check.

Pro Tip: Keep three mops on hand—one for solvent, one for dry passes, and one for light oil. Label them to prevent cross-contamination and preserve accuracy, especially for cold-bore shots.

Ideal For

• Precision AR-10 builds in .308 Win / 7.62×51

• Match shooters & instructors who need quick, consistent chamber care between strings

• Hunting rifles exposed to dust, moisture, and temperature swings

• Armorers servicing multiple AR-10 platforms where speed and repeatability matter

Maintenance & Care

• Hand-wash periodically with mild detergent, rinse thoroughly, and air-dry completely.

• Store in the original retail sleeve or a sealed pouch to keep fibers clean.

• Replace when the pile becomes matted or absorbency noticeably declines.

Compatibility Notes

• Confirm your cleaning rod’s thread size; use an adapter if needed.

• Safe with common CLP, carbon cutters, and bore solvents (follow chemical manufacturer guidance).

• Using a receiver/chamber guide helps maintain rod alignment and protects the extension and lugs.

Specifications

SEO Highlights (for Merchandising & Search)

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Improve chamber cleanliness, extraction consistency, and overall reliability—add the Breakthrough Clean Technologies BT-308CM-AR Chamber Mop to your AR-10 maintenance kit today.
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