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Bear Creek Arsenal M16 Profile BCG – 5.56 NATO – Black Nitride – BCG-15
The Bear Creek Arsenal BCG-15 is a high-value, professional-grade complete bolt carrier group designed for the AR-15 platform. Engineered for maximum durability and smooth operation, this BCG features a full-mass M16 profile, which provides the necessary weight for reliable cycling in both suppressed and unsuppressed rifles. The carrier is machined from 8620 steel and finished with a Salt Bath Nitride (Melonite) coating. This advanced treatment creates a surface that is harder than chrome and exceptionally slick, reducing the need for heavy lubrication and making cleanup significantly easier after high-volume range sessions.
The bolt itself is crafted from 9310 alloy steel, offering roughly 7% more strength than standard Carpenter 158 steel to ensure a longer service life under high-pressure loads. Every unit undergoes Magnetic Particle Inspection (MPI) to verify that the steel is free of microscopic cracks or defects. The gas key is properly staked with Grade-8 hardware to prevent loosening under recoil, and the bolt is finished in manganese phosphate for added corrosion resistance. Whether you are performing a budget-friendly build or replacing a high-mileage part, the BCA BCG-15 delivers "duty-ready" performance at an entry-level price point.
Includes: (1) Complete M16 Profile Bolt Carrier, (1) 5.56/.223/.300 BLK Bolt Assembly, Firing Pin, Cam Pin, and Retaining Pin.
Key Features
- M16 Full-Mass Profile: Provides the consistent cyclic rate and reliability required for duty-style AR-15 builds.
- Black Nitride Carrier Finish: A Salt Bath Nitride treatment that is wear-resistant, corrosion-resistant, and ultra-slick for easy maintenance.
- 9310 Steel Bolt: Aircraft-grade alloy steel construction that provides superior fatigue strength compared to Mil-Spec C158.
- MPI Inspected: Magnetic Particle Inspected to ensure every bolt carrier group is structurally sound and free from material flaws.
- Staked Gas Key: Gas key is secured with Grade-8 fasteners and properly staked to Mil-Spec standards for long-term reliability.
- Multi-Caliber Compatibility: Optimized for 5.56 NATO and .223 Remington, but also fully compatible with .300 Blackout and .350 Legend.
Product Specifications
- Brand: Bear Creek Arsenal (BCA)
- Model: BCG-15 (M16 Cut)
- Platform: AR-15
- Caliber: 5.56 NATO / .223 Rem / .300 BLK
- Carrier Material: 8620 Steel
- Bolt Material: 9310 Alloy Steel
- Carrier Finish: Black Nitride (Melonite)
- Bolt Finish: Manganese Phosphate / Parkerized
- Magnetic Particle Inspected: Yes (MPI)
- Weight: 0.72 lbs (11.6 oz)
- MPN: BCG-15
- UPC: 2030 (Manufacturer SKU reference)
