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