Vktr Industries WLA-PAC-7004-05 Castle Nut Black Steel AR10/AR15

The Vktr Industries WLA-PAC-7004-05 castle nut is a critical component for any AR10 or AR15 builder. This black steel fastener secures your buffer tube to the receiver extension, keeping your stock locked in place where it belongs. Whether you're assembling a new rifle from the ground up, replacing a worn component, or swapping stocks, a quality castle nut is a non-negotiable part of a solid build. The black steel finish matches standard mil-spec parts and handles the rigors of range sessions and field use without issue.

Castle nuts are often overlooked in rifle builds, but they're the unsung hero that keeps your buttstock from rotating or walking loose under recoil. If you're running an AR10 or AR15—whether it's a hunting rifle, precision platform, or duty gun—you need a properly installed castle nut to keep everything secure and reliable. Vktr Industries delivers a straightforward, no-nonsense part that does the job right.

This is a basic but essential component for AR builders at any level. Stock up on spares or grab one as part of a complete buffer tube assembly. It's the kind of thing you don't think about until something is missing, so keep one in your parts bin.

Specifications

Frequently Asked Questions

What rifle platforms does this castle nut fit?

The Vktr Industries castle nut is compatible with AR10 and AR15 rifles, fitting standard buffer tube extensions on both platforms.

Do I need a special tool to install this castle nut?

We don't have installation tool specifications for this product. A castle nut wrench is commonly used for installation; check your stock or buffer tube documentation for tool requirements.

Is this a mil-spec part?

This castle nut is designed for AR10 and AR15 compatibility. For detailed mil-spec compliance information, contact Vktr Industries directly.