M9 Bayonet (Dummy Knife)
That's not a knife...
If you're going to select a melee weapon for silent take downs in airsoft, why settle for half-measures. Go whole hog with the Ultimate Tactical Machete! Although not quite as imposing as an angry Danny Trejo, it is arguably more practical (and more capable)!
Constructed out of durable polymer, this training weapon is suitable for airsoft, or martial arts training. As a dummy knife, it stands in for the real deal, giving an accurate impression of range, without posing a thread to the users.