The TFR (Total Fouling Removal) Kit is made with black heavy duty long lasting nylon bristles. These brushes were made specifically for your AR-15 and built tough so they can be used repeatedly. It is compatible with standard american cleaning rod with #8-32 threads. The kit includes: upper receiver brush, bolt carrier brush, bore brush and chamber brush.
Specifications:

Type
Size
Quantity
Bristle Type
Length
Includes
Material
Tip Feature
Battery
Thread Pattern
Protects
Suitable For
Eco-Friendly