The SI Anti-rotation/Anti-walk pin kit adds an extra degree of security to prevent your pins from walking out under fire or harsh use. Toolless installation and disassembly allows for ease of maintenance, with no small screws to back out or become lost. The smooth polished surface allows for a smoother trigger pull with standard trigger groups, and the additional retention is essential for drop in trigger packs. QPQ nitrided high strength steel prevents corrosion and wear providing for a lifetime of use. Specifications for Strike Industries AR Anti-Walk Pins: Manufacturer: Strike Industries Color: Black Quantity: 1 Features of Strike Industries AR Anti-Walk Pins Tool less installation QPQ Nitride for smooth function and long life Polished surface improves trigger feel Package Contents: Strike Industries AR Anti-Walk Pins 2x Antiwalk/Antirotation Trigger/Hammer Pin 1x AWP Clip