Strike Industries Anti-Walk/Anti-Rotation Trigger/Hammer Pins - The Strike Industries Anti-Walk/Anti-Rotation pin kit adds an extra degree of security to prevent your pins from walking out under fire or harsh use. Tool-free 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. The QPQ Nitride finished, high-strength steel prevents corrosion and wear, allowing for a lifetime of use. QPQ Nitride Finish For Smooth Function And Durability Polished Surface Improves Trigger Feel Tool-Free Installation