BREAKTHROUGH CLEAN TECHNOLOGIES CHAMBER MOP - .308 CAL / 7.62MM (AR-10) - 79MM (RETAIL PACKAGING) BT-308CM-AR BT-308CM-AR BT308CMAR

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) Clear the rifle: Verify unloaded. Separate upper from lower; remove BCG and charging handle. 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. Agitate (optional): For stubborn deposits, run a chamber brush, then repeat with the solvent mop. Dry pass: Swap to a clean, dry mop to remove solvent and loosened debris. Protective film: Use a dedicated oiled mop to apply a thin, even anti-corrosion layer. Avoid over-oiling that could migrate into the bore. 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 AttributeDetailProductBreakthrough Clean Technologies Chamber MopCaliber.308 / 7.62×51 (AR-10)Length79mmMaterial100% cotton mop headUseSolvent application, residue pickup, final oiling (chamber & lug recess)Model / SKUBT-308CM-ARAlt SKUBT308CMARUPC855525007559PackagingRetail packaging SEO Highlights (for Merchandising & Search) Breakthrough Clean chamber mop .308, 7.62 AR-10 chamber mop 79mm, AR-10 chamber cleaning tool, BT-308CM-AR BT308CMAR, retail packaging chamber mop, low-lint cotton chamber mop, .308 Win 7.62 NATO chamber and lug recess mop, UPC 855525007559. 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. "The End"