SKU: CMC91401
UPC: 850544004909
The CMC Anti-Walk Pin Set with small pins is a precision-engineered retention solution designed to eliminate hammer and trigger pin walk—one of the most common reliability failures in AR-pattern and tactical firearms. CMC Triggers' anti-walk pin set features dimensionally verified .154" diameter pins at .885" length, engineered to maintain zero clearance fit in standard receiver pinholes, preventing the gradual drift that causes pin loss and trigger group separation during sustained firing cycles or high-round-count training.
Pin walk occurs when recoil impulses gradually shift standard pins outward, eventually allowing them to fall free. This generates downtime at worst and safety issues at best—a failure mode every range officer and duty-focused shooter has encountered. CMC's engineered fit maintains positive retention across thousands of rounds without modification to receiver holes. Installation is straightforward and requires no gunsmithing; included instructions walk users through proper seating and function verification. The small pin format is compatible with standard AR-15 and similar platforms using .154" nominal pinhole diameter.
This set serves operators, competitive shooters, armament technicians, and serious enthusiasts who run suppressed builds, short-barreled configurations, or high-rate-of-fire training regimens where standard pins prove inadequate. Duty-focused platforms—whether semi-automatic sporting rifles, law enforcement configurations, or professional-grade carbines—benefit from this retrofit. It's a low-cost insurance policy against unplanned disassembly during critical moments, making it a foundational upgrade for anyone running an AR-platform repeatedly or under demanding conditions.
WARNING ⚠️
You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
Purchasing a Firearm? Click HERE to see our firearm purchasing guide.