Aero Precision Left Hand AR-15 Bolt Carrier Group – Nickel Plated | 5.56 / .223

Purpose-Built for Left-Handed AR-15 Builds

This Left Hand AR-15 Bolt Carrier Group is engineered specifically for use with left-handed upper receivers only. Custom made for left-handed shooters, this BCG provides reliable function, smooth cycling, and consistent performance in 5.56 / .223 AR-15 platforms.

Nickel Boron Finish for Smooth, Reliable Operation

Finished in Nickel Boron, this bolt carrier group offers a low-friction, corrosion-resistant surface that promotes smooth operation and simplifies cleaning. The sleek, no-logo exterior provides a clean, modern appearance while maintaining proven performance.

Premium Materials & Complete Assembly

Machined from 8620 steel, the M16-cut carrier is built for strength and durability. The bolt is manufactured from Carpenter 158 tool steel, shot peened for increased fatigue resistance, and HPT tested and MPI marked to ensure quality and reliability. All components come fully installed, making this a true drop-in solution.

Built for Reliability & Longevity

This bolt carrier group features a properly staked gas key, forward assist serrations, and hardened internal components designed to withstand repeated use. From the titanium firing pin to the heavy-duty extractor coil pin, every detail is designed for dependable operation.

Important Compatibility Note

Note: This bolt carrier group is designed for left-handed AR-15 upper receivers only. It is not compatible with standard right-handed uppers.

Specifications

• Bolt Assembly: 8620 Steel
• Bolt Material: Carpenter 158 Tool Steel
• Bolt Finish: Nickel Boron
• Carrier Finish: Nickel Boron
• Carrier Style: M16-Cut
• Extractor: 4140 Steel
• Extractor Coil Pin: Heavy Duty
• Bolt Guides: 4140 Steel
• Firing Pin: Grade 23 Titanium
• Gas Key: Properly Staked
• Testing: HPT Tested / MPI Marked
• Assembly: Fully Assembled, Drop-In Ready

Why Choose This Left Hand Bolt Carrier Group

• Designed specifically for left-handed AR-15 uppers
• Nickel Boron finish for smooth operation and easy maintenance
• No-logo design for a clean, modern look
• High-quality materials and precision machining
• Fully assembled and ready to install