Centurion Arms AR-15 5.56 Chrome Bolt Carrier Group, Sand Rail Cut w/ Chrome E4 Bolt - BCG-556-CHR-SR-E4

Upgrade your AR-15 with the Centurion Arms AR-15 5.56 Chrome Bolt Carrier Group, Sand Rail Cut w/ Chrome E4 Bolt – the pinnacle of reliability and performance for demanding shooters. Engineered for seamless operation in harsh conditions, this BCG combines cutting-edge design with proven durability, ensuring your rifle cycles flawlessly round after round. Whether you’re running suppressed setups or high-volume training, this bolt carrier group delivers unmatched consistency and ease of maintenance.

Key Features

• Hard Chrome Finish: The entire assembly, including the carrier, bolt, cam pin, and gas key, features a robust hard chrome plating that resists corrosion, reduces friction, and simplifies cleaning – perfect for shooters who demand low-maintenance reliability.
• Sand Rail Cuts: Innovative rail modifications on the carrier minimize carbon buildup and enhance gas flow, promoting smoother extraction and ejection even in dirty environments or suppressed applications.
• E4 Tapered Chrome Bolt: Crafted from Carpenter 158 steel, this enhanced bolt includes dual ejectors for improved reliability and is designed for compatibility with Knights Armament E3 barrel extensions or Centurion’s T-marked extensions, optimizing performance in specialized builds.
• OCKS-Secured Gas Key: Over-Clocked Key System (OCKS) staking provides superior security, preventing gas key movement under extreme use and ensuring consistent gas impingement.
• Complete Kit Inclusion: Comes fully assembled with firing pin, retaining pin, and all necessary components for immediate drop-in installation.

Specifications

• Bolt Material: Carpenter 158 Steel
• Finish: Hard Chrome
• Cartridge Compatibility: .223/5.56 NATO / .300 BLK
• Carrier Profile: M16 Full-Auto
• High Pressure Tested (HP): Yes
• Magnetic Particle Inspected (MPI): Yes
• Platform: AR-15
• Bolt Finish: Hard Chrome
• Weight: 12.8 oz