Advanced Technology AR-15 Steel Mil-Spec Castle Nut

The Advanced Technology AR-15 Steel Mil-Spec Castle Nut is a durable and reliable component designed to meet the needs of AR-15 enthusiasts. Constructed from high-quality steel, this castle nut is virtually indestructible, ensuring long-lasting performance and dependability. Its versatile design is compatible with commercial, military, and hybrid buffer tubes, making it a perfect fit for most AR-15s and AR variants. Featuring a sleek black finish, this Mil-Spec castle nut combines strength and style for your firearm. Please note, it is not compatible with 308 rifles.