CMC Triggers 91401 Anti-Walk Pin Set Small AR-15 Black Steel

The CMC Triggers 91401 Anti-Walk Pin Set eliminates trigger and hammer pin migration in AR-15 platforms, maintaining consistent trigger performance and preventing costly malfunctions. This precision-engineered solution addresses the common issue of standard pins working loose during extended firing sessions.

What Makes This Different

Unlike standard mil-spec pins that rely solely on receiver tension, the CMC Anti-Walk Pin Set features enlarged heads that distribute stress across a wider surface area. The black anodized steel construction provides superior corrosion resistance compared to standard phosphate-coated pins. These pins maintain zero clearance fit while preventing the lateral movement that causes trigger group instability and timing issues.

Key Features

• Enlarged pin heads prevent lateral migration and maintain trigger group alignment
• Black anodized steel construction resists corrosion and wear
• Small profile design fits standard AR-15 lower receivers without modification
• Precision machined to exact tolerances for consistent performance
• Compatible with CMC drop-in trigger systems and mil-spec trigger groups
• No gunsmithing required for installation
• Includes both trigger and hammer pins

These anti-walk pins maintain critical tolerances during high-volume shooting, competition use, and tactical applications. The enlarged heads distribute force evenly across the receiver walls, reducing stress concentrations that can cause pin holes to elongate over time. Law enforcement agencies and competitive shooters rely on this solution to maintain consistent trigger pull weights and reset characteristics.

Technical Specs

• Material: Black anodized steel
• Pin diameter: .154 inches (standard AR-15)
• Head diameter: Enlarged for anti-walk function
• Compatibility: AR-15 lower receivers
• Finish: Type III hard anodizing
• Package includes: Trigger pin and hammer pin
• Installation: Drop-in replacement for standard pins

The CMC 91401 Anti-Walk Pin Set represents a cost-effective upgrade that prevents expensive receiver damage while maintaining optimal trigger function. Professional armorers and serious shooters choose this solution to eliminate pin walk issues before they compromise accuracy or reliability.