Aero Precision - AR15 5.56 PRO Bolt Carrier Group - Black Nitride

Built for extreme conditions, the Aero Precision PRO 5.56 Bolt Carrier Group (BCG) is engineered for superior reliability and service life. Every component is precision-machined and rigorously tested to deliver optimal performance in demanding environments.

Bolt Features:

• Machined from 9310 steel for superior strength
• Proprietary flash-nitride heat treatment ensures durability
• Counter-bored cam pin channel eliminates stress-inducing swaging
• Shot peened and MPI tested for reliability

Cam Pin Features:

• Machined from 4140 steel with a nitride finish
• Precision ground after heat treatment for exacting tolerances
• Engraved indexing mark for consistent installation and reduced wear

Extractor Features:

• Machined from 4140 steel for toughness
• Shot peened and phosphate-coated for positive case engagement
• Optimized for long-term durability

Carrier Features:

• Machined from 8620 steel with an M16 cut design
• Black nitride finish for reduced friction and easy maintenance
• Precision-ground internal surfaces for optimal gas efficiency
• Precision-machined carrier rails for smooth operation

Gas Key Features:

• Hardened 4140 steel construction
• Properly torqued and secured with grade 8 hex fasteners
• Mil-spec staked for long-term reliability
• Nitride finish for added durability

Additional Features:

• Firing pin: Ground from 8640 steel with a nitride finish
• Ejector: Machined from S7 tool steel for impact resistance

Specifications:

• Platform: AR15
• Finish: Black Nitride
• Bolt Material: 9310 Steel
• Carrier Material: 8620 Steel
• Weight: 11.4 oz
• Made in the USA

Designed to exceed mil-spec performance, the Aero Precision PRO 5.56 BCG is the perfect upgrade for your AR15, providing unmatched durability, precision, and reliability in the field.