BC-15 | .458 SOCOM / .450 Bushmaster Rear Charging Bolt Carrier Group

In stock

Bear Creek Arsenal's .458 SOCOM/.450 Bushmaster bolt carrier groups (BCGs) are Magnetic Particle Inspected (MPI) to ensure high performance. BCA's .458/.450 BCG is made with durable 9310 Steel and compatible with both all Rear Charging 450 Bushmaster and .458 SOCOM uppers; the gas key is also staked from the side for enhanced durability. Includes Bolt, Bolt Carrier, Extractor Pin, Firing Pin, and Cam Pin. Use a Bear Creek Arsenal BCG for your next AR-15 build and experience high performance at a lower cost! 


Brand: Bear Creek Arsenal
Caliber / Guage: .450 / .458
Carrier Style: Standard
Platform: AR-15
Bolt Finish: Parkerized
Bolt Material: 9310 Steel
Carrier Finish: Black Nitride
Gas Key: Staked
Magnetic Particle Inspection: Yes

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WARNING: This product can expose you to chemicals, such as lead and other petroleum products, which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to the California P65 Warning site.

It is the responsibility of the consumer to ensure all state, local, federal, and ITAR regulations are followed                  

More Information
SKU BCG-450-458
Weight (lbs) 0.710000
Magazine Capacity N/A
Barrel Finish Black Nitride
Caliber .450 Bushmaster
Flutes Non-fluted
Charging Style Rear Charging
Classification Bolt Carrier Group
Platform AR-15
Bolt Material E9310
Customer Reviews
Customer Questions
What magazine/ammo does BCA recommend for each caliber?
Caliber Magazine Ammo Grain Weight Ammo Brands   BCA Status AR15 - 223/5.56 MagPul PMAG, MFT 55, 69, 75   Sierra   AR15 - ...
Is my BCA BCG staked?
Yes! We have changed to staking BCGs from the side instead of from the top. All BCA BCGs are rated for full auto, this side staking process has proven to increase the longevity of the BCG and hold on the gas keys. If you have further questions, please...
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