The name 'Black Out' means 'to get the black out of your gun.' This is the best way to clean rifles with hard to remove barrels. Simply remove the existing nipple. Then put the end of the surgical tubing into your cleaning solution. Wet one of the white cleaning patches and run it up and down the barrel. Continue by changing the patch until clean. Dry and season your barrel with the supplied seasoning patches. You can also use the seasoning patches to clean around the nipple and the stock of the gun. Hint: to keep the free end of the tubing in the cleaning solution and not flopping around, thread our drilled .75 cal round ball on the end of the tubing for a weight.