Ergo 4971B Castle Nut Steel Black for AR-Platform Rifles

• Enhanced durability: The Ergo 4971B Castle Nut is made from high-quality steel, ensuring long-lasting performance and resistance to wear and tear.
• Perfect fit: Designed to be compatible with M4 style receiver extension tubes, this castle nut provides a secure and precise fit, ensuring optimal stability.
• Sleek black coating: The black coating not only adds a stylish touch to your AR-platform, but it also provides an extra layer of protection against corrosion and scratches.

The ERGO 4971B Castle NutSteel Black for AR-Platform! This receiver extension castle nut is a must-have for all M4 style receiver extension tubes. Crafted with precision and built to last, it's time to take your AR-platform to the next level.

Designed to meet the standard Mil-Spec CAR castle nut specifications, this castle nut is made from high-quality steel for ultimate durability. The sleek black coating not only adds a touch of style but also provides an extra layer of protection against wear and tear.

Installing this castle nut is a breeze, allowing you to quickly and securely attach your receiver extension tube. Its reliable construction ensures a snug fit, giving you peace of mind during intense shooting sessions or outdoor adventures.

Whether you're a seasoned AR enthusiast or a first-time gun owner, the ERGO 4971B Castle NutSteel Black is an essential addition to your firearm accessories. Its sturdy build and sleek design make it a standout choice for those who value both functionality and aesthetics.

Upgrade your AR-platform today with the ERGO 4971B Castle NutSteel Black for AR-Platform. Experience the perfect blend of reliability, durability, and style. Trust ERGO to deliver top-notch products that enhance your shooting experience.