WMD Guns

Overview

The WMD Guns NiB-X Castle Nut is a black, nitride-finished component made from 7075-T6 aluminum, designed to securely fasten the buffer tube to the lower receiver of your AR-15. This durable castle nut ensures that your buffer tube remains in place during use, contributing to the overall stability and function of your build. It is frequently found in mid-length gas system builds chambered in 5.56 NATO, making it a reliable choice for those setups.