ORIGINAL: mauser06

i dont understand how they cut before being fully opened and "locked" back(lack of a better term i know they dont lock) i mean i undertand that your arrow is flying FAST and hitting HARD....but ive pushed those blades through a bunch of things(snypers) and they open SUPER easy....open on everything but air...and know they are super sharp....but dont really understand how they can cut like the DO without being locked back....