This is a Spike's Tactical Part, model ST5BG03.
Your Bolt Carrier Group is one of the most critical parts of your build. Don't buy an imitation. This is the Spike's Tactical BCG with Nickel Boron Coating.
Features:
Nickel Boron Coating Inside and Out (Bolt, Carrier, and Gas Key)
Laser Engraved with ST Spider Logo
