Wmd Guns Ar-15 5.56 Nickel Boron Bolt Carrier Groups - Ar-15 Nib-X Bolt & Carrier Group
$204.99
Each WMD bolt-and-carrier set is precisely machined from high-grade steel alloy to government M16 specs, then given WMD's proprietary NiB-X nickel boron coating that results in a super-smooth, harder-than-chrome surface. NiB-X reduces friction to the...