KNS .154 Diameter Non-Rotating Trigger / Hammer Pins

KNS Precision .154 diameter non-rotating trigger and hammer pins for AR-15/M16 rifles are engineered to lock your trigger and hammer assembly in place during firing. Unlike standard pins that can shift under recoil or bolt carrier impact, these pins are designed to prevent movement when the weapon discharges—critical for reliability and safety, especially in suppressed rifles or high-round-count shooting sessions. If you're running an AR-15 or M16 hard, or pushing volume through a suppressed .223, these pins are worth the upgrade.

KNS made these pins from stainless steel and applied either black nitride (for the black side plates) or DuraCoat finishes (all other color options) to handle the punishment. The .154 diameter is the standard AR platform size, and they fit both semi-auto and full-auto configurations. With an 11 inch-pound maximum torque spec and an 8 inch-pound suggested spec, they're built tough without over-constraining your lower receiver.

Pin migration is a real issue in high-volume or suppressed shooting—a pin that walks can cause timing issues, feeding problems, or worse. These non-rotating pins grip the receiver and prevent that drift, so you can focus on accuracy and round count instead of wondering if your trigger assembly is still where you left it. Whether you're a range rat, a competition shooter, or someone who runs a suppressor on their AR, locking down your trigger group is good insurance.

Key Features

• Stainless steel construction with black nitride or DuraCoat finish for durability
• Non-rotating design prevents pin migration during firing
• Rated for semi-auto and full-auto platforms
• 11 inch-pound maximum torque specification; 8 inch-pound recommended
• Fits standard .154 diameter AR-15/M16 trigger and hammer pin holes

Specifications

Frequently Asked Questions

Will these pins work on my AR-15 lower?

Yes. These .154 diameter non-rotating pins fit standard AR-15 and M16 lowers. They're designed for both platforms.

Do I need special tools to install them?

The product information provided does not include installation tool requirements. Consult KNS Precision documentation or a qualified gunsmith if you're uncertain about installation.

Are these pins good for suppressed rifles?

Yes. KNS designed these pins specifically to withstand the high impact of suppressed firearms in .223, 7.62mm, and other common rifle calibers. The non-rotating design is especially valuable in suppressed builds.

What torque spec should I use when installing?

KNS recommends an 8 inch-pound torque spec, with a 11 inch-pound maximum. Do not exceed the maximum specification.