Strike Industries AR Antiwalk/Antirotation Pin Set, SteelToolless 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. Package includes: 2x Antiwalk Antirotation Trigger Hammer Pin 1x AWP Clip