The Buck Rush is an American pocket knife with assisted opening. This means that the blade is helped by a spring when you open the knife via the thumb stud or flipper. The back of the handle has an extra blocking mechanism, to make sure it does not open inadvertently. So before you can open the knife, it must be unlocked.
The handle is made out of anodized aluminum and has a few openings milled-out. This saves a lot of weight. The total weight of this folding knife is a mere 65 grams!