Yep, you guys are correct, no 300s only the swiss Bucks. But, be sure to make sure you are speaking on bottle openers vs can openers. Carried the old army C-ration opener for years and don't think I ever used it. Usually my use of bottle openers was more for the screw driver or pry edge than the opener. I would think one of the craftsman here, with good buffing/sanding machines could take a old garage sale knife, steal the opener and replace on of the extra blades on a Buck stockman easily (and cheaply). If someone really really needs one. I thought you guys were so tuff that you just twisted them off.
300