WMD Guns NIB-X Nickel Boron upper
The WMD NiB-X Stripped Upper
Receiver features their trademarked NiB-X coating inside and out for a tough,
harder than chrome surface that is extremely corrosion resistant and highly
lubricious for outstanding wear resistance. Machined from 7075-T6 forgings,
this upper includes M4 feed ramps for reliable feeding, and accepts all
standard AR-15 upper receiver parts and barrels.
WMD GUNS Nickel Boron coating is known as the industry standard for Nickel Boron. They were one
of the first companies to offer Nickel Boron to the community and continue to produce the best Nickel Boron products
on the market. With top tier companies like Spike’s Tactical utilizing their
plating services you can’t go wrong.
all standard AR-15 upper receiver components
from 7075-T6 Aluminum forgings with M4 feed ramps
coating gives surface a Rockwell Hardness of Rc70
allows smoother metal-on-metal interaction and reduced wear
surface makes cleaning easier