JP Enterprises .156 Oversize Anti-Walk Pins Black. These AR15 Takedown & Pivot Pins from JP Enterprises remove extra play to make the trigger hammer pins and receiver feel perfectly aligned. JP Enterprises Oversize Anti-Walk Pins have a corrosion resistant black oxide finish. For precise installation pin holes in the trigger and hammer may need to be reamed with a carbide reamer. For solid trigger feel install JP Enterprises Oversize .156 Anti-Walk Pins. Features of JP Enterprises Oversize Anti-Walk Trigger Pins Corrosion resistant black oxide finish Package Contents: JP Enterprises Oversize Anti-Walk Pins (set of 2) 4 retaining screws JP Enterprises JPAW-1: .156 Oversize Anti-Walk Pins Black