The NcSTAR Crows Foot for AR15/M4 GI Spec Castle Nuts is a precision tool tailored for telescoping stock tube adjustments. Constructed from robust steel, it guarantees durability and longevity for reliable use. Measuring 3.4 inches long, 2.0 inches wide, and only 0.4 inches deep, this lightweight 6.7-ounce tool is designed for easy handling and excellent storage convenience, perfect for any gun enthusiast. Durable steel construction for long-lasting performance Compact size for convenient handling and storage Compatible with 1/2" and 3/8" drive sockets Lightweight design at just 6.7 ounces Ideal for both hobbyists and professional gunsmiths Enhance your firearm maintenance with the NcSTAR Crows Foot, combining quality and functionality for effective adjustments.