Battle Arms Development Enhanced Pin Set - Titanium - Black IONBOND DLC "Diamond Like Coating" (BAD-EPS-Ti-B) for the AR15 / M16 / M4 style rifles. The set consists of the Enhanced Takedown Pin - Titanium (BAD-ETP-Ti-B) and Enhanced Pivot Pin - Titanium (BAD-EPP-Ti-B). Precison CNC machined from Grade 5 Titanium Bars, the BAD-ETP-Ti-B & BAD-EPP-Ti-B are in its natural machined titanium finish. 50% Lighter than Mil-Spec pin set!