The Pro-Shot Chamber Maid Chamber Star Swab (brand part no. 556CMS-20) is a patented tool built to clean the locking lug recesses of an AR-platform rifle chambered in 5.56mm/.223, an area a standard bore brush can’t reach. It threads onto your existing bore brush, and rotating it inside the star chamber breaks loose and removes carbon and fouling buildup that accumulates in the lug recesses. Sold 20 to a pack, there’s enough on hand to keep a home cleaning bench or a shop running for a long time. See the full Pro-Shot lineup in our gun cleaning kits and supplies category.

Key Specifications

• 5.56mm/.223 Cal sizing matches the swab to the star chamber geometry of an AR-platform rifle in this chambering.
• Threads onto a standard bore brush so it works with cleaning gear you likely already own.
• Removes carbon and fouling from the locking lug recesses an area a standard bore brush can’t reach.
• Also applies CLP or oil evenly in the star chamber doing double duty for cleaning and lubrication in the same step.
• 20 swabs per pack keeps a home bench or shop stocked for a long run of cleanings.
• Patented design (U.S. Patent No. 0562,935) built specifically for AR-platform star chambers.

Frequently Asked Questions

What does a Chamber Star Swab actually clean? It’s built for the locking lug recesses inside an AR-platform rifle’s star chamber, an area a standard bore brush can’t reach.

How do I use it? Thread it onto your existing bore brush and rotate it inside the star chamber to break loose and remove carbon and fouling.

How many swabs come in a pack? 20 per pack, enough to keep a home bench or shop stocked for a long stretch of cleanings.

Buy the Pro-Shot Chamber Maid 5.56/.223 Chamber Star Swabs, 20-Pack

The locking lug recesses are one of the last spots to get properly cleaned on an AR, and this swab is built specifically for them. Order it from our Lubbock, Texas gun shop for fast, direct shipping right to your door.