Aero Precision, PRO Series Bolt Carrier Group, 5.56, Black Nitride Finish

The Aero Precision PRO 5.56 Bolt Carrier Group is built from the ground up to meet the demands of the most extreme conditions. Each component and manufacturing process of the PRO 5.56 Bolt Carrier Group was deliberately chosen to increase the reliable service life of the bolt carrier group and its components.

BOLT
The bolt is one of the most important parts of the bolt carrier group. Machined from 9310 steel, a proprietary flash nitride process was chosen to ensure proper heat treatment on the bolt. When properly heat treated, 9310 steel provides superior strength and durability when compared to C158.

The cam pin channel is counter bored, eliminating the need for swaging. Swaging is the industry standard, however this process creates more stress on the bolt during manufacturing by displacing material rather than cutting it to the proper dimension from the start.

Product Specifications: 

• Model: PRO Series BCG
• Type: Bolt Carrier Group
• CALIBER:    5.56x45mm NATO
• DEPARTMENT:    Shooting
• FINISH:    Black Nitride
• Platform:    AR15
• Bolt Material:    9310 Steel
• Carrier Material:    8620 Steel
• Color: Black
• Weight(s):    11.4 oz

Features: 

• M16 Style Cut
• Shot peened
• MPI tested
• Nitride Finish
• Critical surfaces precision ground for optimal gas efficiency and reliability