The Otis FG2717, also known as Otis\' Star Chamber Cleaning Tool, is designed to make cleaning the chamber area of an MSR/AR style rifle less complicated and more comfortable. The tool showcases a parkerized steel scraper, effective in removing fouling build-up.Its brass nose piece, which is coated, ensures the tool is appropriately centered in the chamber during the cleaning process. This particular model is compatible with 7.62mm rifles, and features 8-32 threads.In addition, your purchase includes 6 cleaning pads to assist with your maintenance needs.