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Wmd Guns
The WMD NIB-X BCG 450 Bushmaster is a nickel boron-coated bolt carrier group built to handle the demands of one of the most popular large-bore AR cartridges. If you're running 450 Bushmaster—whether for hunting heavy game, suppressed shooting, or just enjoying the ballistics of a short-range rifle cartridge—you need a BCG that matches the reliability and durability of your build. WMD Guns engineered this group with case-hardened 9310 steel construction and NiB-X coating to shed fouling, reduce friction, and keep your gun running clean through extended shooting sessions.
The 450 Bushmaster demands a robust bolt carrier group that won't let you down, and this one delivers. The case-hardened 9310 steel bolt is precision-machined and heat-treated to withstand the pressures of the cartridge, while the NiB-X coating provides a hard, slippery finish that resists corrosion and carbon buildup. The bolt itself is hard-chromed for additional durability. A hardened, heat-treated firing pin and full-auto-profile cam pin round out the group—parts designed to function reliably shot after shot, whether you're running suppressed or unsuppressed, with standard or heavy ammunition.
This is the kind of component that lets you focus on accuracy and performance instead of worrying about malfunctions. WMD Guns doesn't cut corners on materials or coatings, and it shows in how these groups run. Whether you're building a 450 Bushmaster hunting rifle, a dedicated range gun, or adding a second upper to your collection, a quality BCG is the foundation of a dependable rifle.
| Caliber | 450 Bushmaster |
| Bolt Material | Case-hardened 9310 steel |
| Coating | NiB-X |
| Firing Pin | Hardened, heat-treated, chromed |
| Cam Pin | Full-auto profile |
| Type | Bolt carrier group |
Yes. The WMD NIB-X BCG is built and specified for 450 Bushmaster rifles.
NiB-X is a nickel boron coating applied to the bolt carrier group. It reduces friction, resists corrosion, and sheds carbon fouling more effectively than standard finishes, which helps keep the group running cleaner and easier to maintain over time.
This is a full-auto-profile bolt carrier group, meaning it will function reliably in semi-auto rifles and uses a standard mil-spec hammer and trigger.
The group includes the bolt, carrier, firing pin, and cam pin—everything needed as the heart of your rifle's operation.
Wmd Guns
The WMD NIB-X BCG 450 Bushmaster is a nickel boron-coated bolt carrier group built to handle the demands of one of the most popular large-bore AR cartridges. If you're running 450 Bushmaster—whether for hunting heavy game, suppressed shooting, or just enjoying the ballistics of a short-range rifle cartridge—you need a BCG that matches the reliability and durability of your build. WMD Guns engineered this group with case-hardened 9310 steel construction and NiB-X coating to shed fouling, reduce friction, and keep your gun running clean through extended shooting sessions.
The 450 Bushmaster demands a robust bolt carrier group that won't let you down, and this one delivers. The case-hardened 9310 steel bolt is precision-machined and heat-treated to withstand the pressures of the cartridge, while the NiB-X coating provides a hard, slippery finish that resists corrosion and carbon buildup. The bolt itself is hard-chromed for additional durability. A hardened, heat-treated firing pin and full-auto-profile cam pin round out the group—parts designed to function reliably shot after shot, whether you're running suppressed or unsuppressed, with standard or heavy ammunition.
This is the kind of component that lets you focus on accuracy and performance instead of worrying about malfunctions. WMD Guns doesn't cut corners on materials or coatings, and it shows in how these groups run. Whether you're building a 450 Bushmaster hunting rifle, a dedicated range gun, or adding a second upper to your collection, a quality BCG is the foundation of a dependable rifle.
| Caliber | 450 Bushmaster |
| Bolt Material | Case-hardened 9310 steel |
| Coating | NiB-X |
| Firing Pin | Hardened, heat-treated, chromed |
| Cam Pin | Full-auto profile |
| Type | Bolt carrier group |
Yes. The WMD NIB-X BCG is built and specified for 450 Bushmaster rifles.
NiB-X is a nickel boron coating applied to the bolt carrier group. It reduces friction, resists corrosion, and sheds carbon fouling more effectively than standard finishes, which helps keep the group running cleaner and easier to maintain over time.
This is a full-auto-profile bolt carrier group, meaning it will function reliably in semi-auto rifles and uses a standard mil-spec hammer and trigger.
The group includes the bolt, carrier, firing pin, and cam pin—everything needed as the heart of your rifle's operation.
