SCP-98734 "The Alein bullet"

SCP-122120 is a group of 10 now 3 copper bullet-like objects with an ominous green glow. It was found in █████ ███████. The first use of the bullet was in a test where the bullet was put into an average bolt action rifle where it then was to be shot out of the rifle like a normal bullet but for extra precaution, it was brought to ████████ █████ ██████ before being fired the bullet was fired at a class-D with a bulletproof vest the bullet passed through dealing a fatal blow killing the class-D instantly. We tried heavier military equipment but the bullet still killed everybody it touched. But then one person saw a strange thing inside of the sight ████████ █████ ██████ where it was discovered a strange lock looking thing yet the crevasse where the key mold area was replaced with a bullet mold. Operation TABE later when I get the go-ahead but till then this is all the info about the object.