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AR-15 Bolt Carrier Groups & Parts
A reliable bolt carrier group is essential for proper cycling, extraction, and long-term performance in any AR-15 build. Our AR-15 bolt carrier groups are selected for proven materials, precise machining, and dependable function across standard .223 / 5.56 AR-15 platforms. Whether you’re assembling a new rifle or upgrading a critical component, these BCGs are built to support consistent performance in a wide range of shooting applications.
Choosing the Right AR-15 Bolt Carrier Group
The bolt carrier group plays a central role in how your rifle cycles and handles wear over time. When selecting a BCG, focus on bolt material, gas key staking, and overall machining quality rather than cosmetic features.
A properly manufactured BCG helps ensure reliable extraction, smooth cycling, and long-term durability under regular use.
AR-15 BCG Materials & Coatings
- Bolt materials: Carpenter 158 or 9310 steel
- Carrier materials: 8620 steel
- Common coatings: Phosphate, nitride, nickel boron
Components to Pair with Your Bolt Carrier Group
Customization Options
Select AR-15 bolt carrier groups are available with custom finishes and engraving options. These enhancements allow builders to personalize their setup while maintaining proper function and reliability.
Build with Confidence
If you’re planning a complete build or upgrading critical components, these resources can help guide your selection:
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