Battle Arms Development Enhanced Pin Set Kit, For AR Rifles, Includes BAD-ETP-TI, BAD-EPP-TI, 2 KNS Detents, and 2 Springs, Titanium Finish BAD-EPS-TI Battle Arms Development Enhanced Pin Set (BAD-EPS-Ti) for the AR15 / M16 / M4 style rifles. The set consists of the Enhanced Takedown Pin - Titanium (BAD-ETP-Ti) and Enhanced Pivot Pin - Titanium (BAD-EPP-Ti). Precision CNC machined from Grade 5 Titanium Bars, the BAD-ETP-Ti & BAD-EPP-Ti are in its natural machined titanium finish. 50 percent lighter than Mil-Spec pin set!