Swab-Its Star Chamber Cleaning Foam for AR15 122. Without a doubt the AR-15 is one of the most popular and exciting rifles to own and shoot. Every owner knows it is a challenging rifle to clean. Swab-its Star Chamber Cleaning Foam Swabs are designed to access hard to reach areas in your firearm that have been difficult to effectively clean and lubricate. The star chamber also known as the barrel extension is the area where the barrel and the upper receiver of the AR-15 fit and meet. The chamber between the locking lugs of the barrel extension is notorious for being a nightmare to clean. This is in part due to the unique design and accessibility of the area which contributes to the difficulty in removing fouling and debris. NOTES: Swab-its Star Chamber Cleaning Foam Swabs design is for the AR-15/M4 platforms. AR-10 and bolt actions are manufactured with much larger chambers and locking lugs. Each tip can be used multiple times and should substantially outlast a similarly priced bag of patches mops and felt pads. Specifications for Swab-Its Star Chamber Cleaning Swabs for AR15/M4: Manufacturer: Swab-Its Quantity: 3 pcs Gun Model: M4 AR-15 Features of Star Chamber Cleaning Swabs Includes 3 Star Chamber Cleaning Foam Swabs per bag Easily reaches 360 degrees of the Barrel Extension chamber Wings easily penetrate locking lugs Doubles as Empty Chamber Indicator Precision cleaning and lubricating tool Lint and fiber free Economical - washable and reusable Package Contents: Swab-Its Star Chamber Cleaning Foam for AR15 What firearm models does the manufacturer say Swab-Its Star Chamber Cleaning Swabs for AR15/M4 is compatible with? The manufacturer suggests that Swab-Its Star Chamber Cleaning Swabs for AR15/M4 is compatible with AR-15 M4Super-Brush 435556122: Star Chamber Cleaning Foam for AR15/M4 3 pcs