(BCGs) are Magnetic Particle Inspected (MPI) to ensure high performance. 5.56/223 BCG is made with durable 9310 Steel and the gas key is also staked from the side for enhanced durability.  

Specifications:

• Caliber: .223/5.56 NATO/.300 Blackout/.350 Legend
  
• Carrier Style: Standard
  
• Platform: AR-15 
  
• Bolt Finish: Parkerized
  
• Bolt Material: 9310 Steel 
  
• Carrier Finish: Black Nitrid
  
• Gas Key: Staked from the side to increase longevity 
  
• Magnetic Particle Inspection: Yes