FailZero 450 Bushmaster, Bolt Carrier Group, Silver, No Hammer, Nickel Boron
$155.58 at Kentucky Gun Co · 9 stores
In stock
Faxon Firearms 458/ 450 M16 Bolt Carrier Group BCG Nitrided
Faxon Firearms · Bolt Carrier Group
No ratings yetBest price
$161.00at OpticsPlanet
In stock Sale Lowest in 30 dayschecked Nov 13, 2026
Fits and works with
- Caliber
- .450 Bushmaster · Shop matching ammo
- Bolt
- .458 SOCOM / .450 Bushmaster · Bolt carrier groups
Specifications
- Manufacturer
- Faxon Firearms
- Color
- Black
- Platform
- AR-15
- Caliber
- .450 Bushmaster
- Finish
- Nitride
- Material
- Steel
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet Best price | $161.00Salechecked Nov 13, 2026 | In stock | Buy at OpticsPlanet | |
| Faxon Firearms | $175.00checked Nov 13, 2026 | Check store | Buy at Faxon Firearms | |
| MidwayUSA | $161.00checked Nov 13, 2026 | Out of stock | Buy at MidwayUSA |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $161.00 at MidwayUSA. Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Faxon Firearms | $175.00 | $175.00 | $175.00 |
| MidwayUSA | $161.00 | $161.00 | $161.00 |
| OpticsPlanet | $161.00 | $161.00 | $161.00 |
Since Oct 12, 2026.
About this part
The Faxon Firearms 458/ 450 M16 Bolt Carrier Group BCG Nitrided is a .450 Bushmaster bolt carrier group from Faxon Firearms. It's sold by 3 stores (1 in stock), from $161.00 to $175.00. The lowest in-stock price in the last 30 days was $161.00 at MidwayUSA.
From the manufacturer
Faxon Firearms 458/ 450 M16 Bolt Carrier Group BCG Nitrided. Improvements include using 9310 tool steel for the bolt nitriding the assembly to increase surface hardness decrease resistance and have superior corrosion resistance compared to typical chrome and phosphasted bolt carrier groups. All bolts are fully MPI tested to ensure the material is sound and without defects. Bolt lugs are chamfered 45 degrees to ensure reliable action for even the highest pressure hand loads and fast lightweight actions. Faxon Bolt Carrier Groups are Superfinished to reduce friction increase smoothness of operation and reduce fouling. Further they are full-Auto rated and maintain the trip for full-auto fire control groups and new multi-stage trigger systems. Gas keys use grade 8 fasteners and are fully staked for a lifetime of service. Detailed Specifications: 9310 Tool Steel Bolt Full MIL-SPEC Heat Treatment Shot Peened to MIL-SPEC Magnetic Particle Inspection (MPI) Back of Lugs Chamfered for Reliability Spring Insert & in Crane in O-Ring Installed Salt Bath Nitrided Bolt & Carrier S7 Extractor Superfinished Carrier Body Full Auto Compatible Forward Assist Serrations Specifications for Faxon Firearms 458/ 450 M16 Bolt Carrier Group: Manufacturer: Faxon Firearms Color: Black Finish: Nitrided Fabric/Material: 9310 Tool Steel Carrier Material: 8620 Steel Bolt Material: 9310 Steel Caliber: .458 SOCOM .450 Bushmaster Gun Make: Colt Gun Model: M16 Condition: New Package Contents: Faxon Firearms 458/ 450 M16 Bolt Carrier Group (BCG) What firearm models does the manufacturer say Faxon Firearms 458/ 450 M16 Bolt Carrier Group is compatible with? The manufacturer says that Faxon Firearms 458/ 450 M16 Bolt Carrier Group is compatible with M16Faxon Firearms FF458BCGCNITRIDE: 458/ 450 M16 Bolt Carrier Group BCG Nitrided
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