Aero Precision - AR15 5.56 PRO Bolt Carrier Group 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.