WMD Guns AR-15 Bolt Carrier Group Polished NiB Coated Semi Automatic Profile With Hammer Polished NIBXBCG0004

WMD Guns
855899003034
NIBXBCG0004
8-WMD-NIBXBCG0004
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This AR-15 bolt carrier group has been coated with NiB-X nickel boron for superior lubricity and heat dissipation and long life. Staked gas key and ready to drop into your upper. Semi auto design.

Specifications and Features:
Carpenter 158 case hardened, shot peened and magnetic particle inspected bolt. Manufactured to Government drawings. Mil Spec gas rings. NiB-X coated (40% more wear resistant Than Chrome)
Extractor is Manufactored, heat treated, hardened, per Government drawings. Black extractor buffer and heavy duty spring. NiB-X coated
Firing Pin is Manufactured, Heat treated, hardened, per Government darwings
Semi Automatic Carrier Profile 8620 material, heat treated and case hardened
Manufacturing tolerances on inside diameters tightly controlled. NiB-X coated for durability and ease of cleaning
Gas Key is Hardened to USGI specifications and attached using grade 8 hardened fasteners Permatex No. 3D Aviation form a gasket type III sealing compound per Mil-S-45180 used on assembly. NiB-X coated. Staked per Military specifications
NiB-X coated Cam Pin
NiB-X coated Hammer
Advantages of NiB-X include:
Harder than Tennifer, Melonite, Nickel Teflon, and Hard Chrome. (NiB-X is Rc72)
Environmental corrosion protection
Very lubricious (coF .07)
Easier to clean (wipes clean in most cases)
Less Maintenance (Longer usage between cleaning cycles)
Higher Reliability
Enhanced Performance