Proceed like this: the weapon has to be degreased carefully (e.g. with Robla Cold Degreaser). Then apply Schnellbrünierung by means of a dropper or brush on the parts to be browned (Note that Schnellbrünierung does not work on steel containing more than 3% Chromium). Allow to react for say 3 minutes until a yellow-whitish cover forms. Then wash it off with water, dry it by dabbing with a soft cloth and spray BALLISTOL or Gunex-2000 on it. Ready!T hat can’t be done more simply, quickly and cheap, can it?