NV Mount Cap Kit replaces the IMUNS kit we sold previously. It installs onto the spigot mount, giving a top rail mount option for mounting night vision devices onto your chassis. The kit comes with the Night Vision Mount Cap (NVMC) and the appropriate spacers to use with the Spigot Mount as well as mounting screws. Fits: All KRG Spigot Mounts Restrictions: None Weight: 3.3oz Material: 7075 and 6061 Aluminum, hard anodized