AT3 Castle Nut for AR-15 Buffer Tubes

$5.99

Color Black Olive Drab Green Flat Dark Earth Bronze Red Blue Tungsten Pink Grey

Secure and Reliable Fit

Ensure rock-solid stability for your AR-15 buffer tube and stock assembly with this high-quality steel castle nut. Designed for precise fitment and durability, this MIL-SPEC castle nut features standard armorer’s wrench cutouts for easy installation, along with staking notches for added security. Whether you’re building a new rifle, upgrading components, or replacing a worn-out nut, this affordable and rugged castle nut is a must-have.

Key Features:

✔ High-Strength Steel Construction – Provides maximum durability and long-lasting performance.
✔ MIL-SPEC Threading – Ensures secure compatibility with standard AR-15 buffer tubes.
✔ Staking Notches for Secure Installation – Prevents loosening over time, maintaining reliability in demanding conditions.
✔ Compatible with Armorer’s Wrench – Allows for hassle-free installation and removal.
✔ Multiple Cerakote™ Color Options – Add a custom touch to your rifle with FDE, OD Green, Pink, Red, Blue, Burnt Bronze, Tungsten, or Titanium.
✔ Black Phosphate Finish Option – Classic, corrosion-resistant finish for a sleek and tactical look.
✔ Perfect for AR-15 Builds & Upgrades – Works seamlessly with all MIL-SPEC AR-15 lower receivers and buffer tubes.

Available Finishes:

🎨 Customize your build with premium Cerakote™ finishes:

🔹 Black: Phosphate finish for a classic, durable look
🔹 Flat Dark Earth (FDE): H-267 Magpul® Flat Dark Earth
🔹 OD Green (ODG): H-232 Magpul® OD Green
🔹 Pink: H-224 SIG™ Pink
🔹 Red: H-167 USMC Red
🔹 Blue: H-171 NRA Blue
🔹 Burnt Bronze: H-148 Burnt Bronze
🔹 Tungsten: H-237 Tungsten
🔹 Titanium: H-170 Titanium

Built for AR-15 Enthusiasts & Professionals

🔸 Ideal for rifle builders, gunsmiths, and AR-15 enthusiasts
🔸 Designed for secure fitment on MIL-SPEC buffer tubes
🔸 Ensures long-term durability and enhanced performance

When reliability and stability matter, trust this steel castle nut to lock your buffer tube assembly in place.

✅ Upgrade your AR-15 today with a battle-tested castle nut that won’t let you down!AT3

Made with care

Great value

Elegant design

Quality materials

This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.

We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.

We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.