Armaspec Stainless Steel Anti-Walk Hammer & Trigger Pins for AR-15

Mil-spec AR-15 lower receivers are built tough, but hammer and trigger pins that walk out of spec will undermine reliability fast. Armaspec stainless steel anti-walk hammer and trigger pins solve that problem with a simple, effective fix: hex-screw retention that keeps your pins locked in place. If you've dealt with a loose pin causing function issues downrange, these are worth installing—they're the kind of small upgrade that prevents real headaches during a match or hunt.

These anti-walk pins are machined from stainless steel and finished in black oxide for corrosion resistance and a clean look in your lower. The design is straightforward: two hex screws secure each pin, and Armaspec includes the installation keys you need. Standard .154-inch diameter ensures compatibility with both AR-15 and AR .308 receivers. The company recommends applying thread-locking compound to the screws during install to maximize holding power—a cheap insurance policy for permanent reliability.

Made in the USA and backed by Armaspec's lifetime warranty, these pins represent the kind of honest engineering you want in a rifle that has to run. Whether you're chasing tight groups at the range or building a dependable hunting rifle, eliminating pin walk is a worthwhile step toward a rifle that stays on zero.

Key Features

• Stainless steel construction with black-oxide finish for durability and corrosion resistance
• Hex-screw retention system keeps pins from walking or shifting
• Installation keys included for hassle-free setup
• Compatible with both AR-15 and AR .308 lower receivers
• Standard .154-inch pin diameter fits mil-spec lowers
• Made in the USA
• Covered by Armaspec lifetime warranty

Specifications

Frequently Asked Questions

Will these pins fit my AR-15 lower?

Yes. These Armaspec anti-walk pins are designed for standard mil-spec AR-15 lower receivers and use a .154-inch diameter pin size. They are also compatible with AR .308 lowers, so the same pins work across both platforms.

What's included in the set?

The package includes the hammer pin, trigger pin, hex screws for retention, and the installation keys required to drive them home. Armaspec recommends adding thread-locking compound to the screws during installation, though that is sold separately.

How do I install them?

The pins are secured using hex screws that lock them in place—much simpler than traditional pins that can drift. The installation keys are included. Armaspec recommends applying thread-locking compound to the screws before tightening to ensure they stay put permanently.

Are these a direct replacement for standard AR-15 trigger and hammer pins?

Yes, they replace standard mil-spec pins, but with the added benefit of the hex-screw locking system to prevent walking. They maintain the same .154-inch diameter, so fitment is identical.