Lantac E-BCG Enhanced 5.56 NATO Bolt Carrier Group Titanium Nitride

The Lantac E-BCG Enhanced 5.56 NATO Bolt Carrier Group is an AR-15 replacement bolt carrier group for 223 Remington and 5.56x45mm NATO rifles. The carrier is machined from 8620 steel, and its bolt is made from Carpenter 158 steel and magnetic particle inspected. The bolt is shot peened, and the carrier carries a titanium nitride finish in gold.

The carrier uses shrouded, forward-facing gas ports sized to vent gas differently from a standard carrier, and a flared boss at the tail that the maker says improves lock-up consistency inside the upper receiver. The listing describes a surface hardness of 82 to 85 Rockwell C and a friction coefficient of 0.02 for the coating. The design is intended for AR-15 and M16 platforms.

• Platform: AR-15/M16
• Calibers: 223 Remington, 5.56x45mm NATO
• Carrier material: 8620 Steel
• Bolt material: Carpenter 158
• Finish: Titanium Nitride
• Color: Gold
• Surface hardness: 82-85 Rockwell C