KNS TURNED DETENT LOWER PARTS KIT

Building an AR from scratch or refreshing a lower receiver that's seen some wear? The KNS Precision Turned Detent Lower Parts Kit gives you the small but critical components that hold everything together. This kit bundles all the detents, pins, and catches needed to complete a lower receiver assembly or stock spares for your next gunsmithing session. KNS machines each part to tight tolerances, so you're not gambling on fit or function with bargain-bin parts.

The kit is built around KNS's signature turned detents—precision-machined components that work more reliably and last longer than stamped alternatives. Every piece is finished in black nitride, a hard, corrosion-resistant coating that stands up to range time and storage. Whether you're a first-time builder, an armorer who rebuilds lower receivers regularly, or someone who keeps a backup kit in the gun room, this is a smart way to ensure you have quality parts on hand without overpaying for individual components.

Lower parts kits aren't glamorous, but they're essential. KNS focuses on the details that matter—material, machining, and finish—so your build is solid from the inside out.

Key Features

• Turned detents for reliable, repeatable performance versus stamped alternatives
• All components finished in hard black nitride coating for corrosion resistance
• Complete set of pins and catches needed to finish a lower receiver
• Precision-machined by KNS Precision for consistent quality
• Ideal for builders, armorers, and spare parts backup

Specifications

Frequently Asked Questions

What's included in the KNS lower parts kit?

The kit includes a bolt catch detent, two buffer detents, two pivot/takedown detents, standard takedown pin, standard pivot pin, hammer pin, trigger pin, and safety detent—everything needed to assemble or repair the small-parts assembly in your lower receiver.

Will this kit work for my AR lower receiver?

This kit contains the standard detents and pins used in modern AR-15 lower receivers. If you have questions about compatibility with your specific lower, reach out to our team before ordering.

Why should I choose turned detents over stamped ones?

KNS machines these detents to precise dimensions, which improves reliability and longevity compared to stamped detents. The consistent shape and fit reduce binding and wear over thousands of cycles.

Is this a complete lower parts kit or just detents?

This is a detent-focused kit that includes the small but critical components—detents, pins, and catch. It does not include trigger groups, springs, or other larger lower receiver parts; it's designed to fill gaps in a build or serve as a spare parts set.