Take Down Pin SetMicroFit Takedown Pin Set Small Frame (. 223) Cure what ails your ill fitting receiver set or just spruce them up with high quality new look. This set of MicroFit Takedown Pins includes both the front pivot pin and rear takedown pin for a small frame receiver set. Select your pin size at right. Oversized pins will remove much if not all of the slack in a loose receiver set while undersized pins will help with easier takedown of overly tight receivers