The CMC Triggers Anti-Walk Pin Set (part no. 91401) is a small, self-contained pin upgrade that keeps an AR-15 trigger group locked in place under recoil. Standard trigger pins can walk out of the receiver over time and rounds fired; CMC machines these pins to hold tight so a drop-in trigger keeps a consistent, reliable pull.

Key Specifications

• Machined from steel for a durable, long-wearing pin set.
• Finished in black anodize for corrosion resistance and a clean match to most lowers.
• Sized for the small-pin AR-15 trigger group, matching CMC’s drop-in trigger pin diameter.
• Designed to be self-contained and easy to install without special tools.
• Built to resist walking, keeping the trigger and hammer pins seated through recoil.
• Sold as an Anti-Walk Pin Set, covering both the trigger pin and hammer pin in one purchase.
• Purpose-built for use with CMC drop-in trigger groups, though it fits standard AR-15 pin bores.
• Weighs about 0.05 lb, adding no meaningful weight to the lower.

Frequently Asked Questions

What trigger group does this fit? It is sized for CMC’s small-pin AR-15 drop-in trigger group.

Why upgrade from factory pins? Standard mil-spec pins can walk out over time; this set is built to stay seated through recoil.

Is installation difficult? No, it is designed as a self-contained, easy-to-install upgrade.

Buy the CMC Triggers Anti-Walk Pin Set

Order this pin set from our small AR-15 parts selection and keep your drop-in trigger running true. Order it from our Lubbock, Texas gun shop for fast, insured shipping.