Mil-spec never dies, but it's way past its prime. When it comes to ARs, the smaller the part, the less people think about it. But that doesn't mean there's not room for improvement almost everywhere you look. Both in design and manufacturing, there are always gains to be made. This bolt carrier pin package includes JP's Enhanced Cam Pin, Firing Pin, and Firing Pin Retainer Pin. Each has undergone a design revision the retains every critical Mil-spec dimension while improving durability, finish and function. These pins are the standard components for all of JP's custom rifle and upper builds. More about the Enhanced Cam Pin: The JP Enhanced Cam Pi Mfg: J P Enterprises