This is a Radian Weapons Takedown Pins, model R0077.
Precision CNC machined steel takedown pin set for AR15/M16 w/ black nitride finish and engraved Radian logo. Pins feature dimpled end for use with cartridge tip or punch" forward pivot pin includes fingernail groove around circumference of pin head for easier removal. Detents and springs included. Compatible with standard AR15/M16 receivers
Features:
CNC Machined
Fits AR15/M16
Dimpled End for Bullet Tip or Punch