Breakthrough Clean Technologies AR15 Upper Brush Set – 5.56/.223

The Breakthrough Clean Technologies AR15 Upper Brush Set addresses the specific cleaning challenges of the AR-15 upper receiver with three purpose-built brushes. This kit tackles carbon buildup in the star chamber, bolt carrier key, and gas tube—areas standard bore brushes can't reach effectively. Each brush is sized and shaped to match AR-15 geometry, removing fouling without damaging critical surfaces.

Set includes a star chamber brush for the barrel extension, a bolt carrier key brush for inside the gas key channel, and a gas tube brush for carbon removal from the gas tube interior. Compatible with all AR-15 and M16 pattern rifles chambered in 5.56 NATO and .223 Remington.

• Type: Upper receiver cleaning brush set
• Compatible: AR-15/M16 (5.56/.223)
• Kit Contents: Star chamber brush, bolt carrier key brush, gas tube brush
• Material: Nylon bristles with steel core
• Use: Upper receiver maintenance, carbon removal from star chamber, gas key, and gas tube