The WMD Guns M16 Nib-x Bolt Carrier Group with Hammer offers exceptional performance and durability for your M16 rifle. Engineered with a robust Nickel-Boron finish this bolt carrier group ensures enhanced resistance to wear and corrosion providing long-lasting reliability in various environments. Designed to accommodate the 5.56 mm NATO cartridge it promises seamless compatibility and efficient operation. Crafted with precision this component is an ideal upgrade for your firearm ensuring smooth cycling and consistent performance with every shot.