Details
Davidson Defense LR-308 Nitride Bolt Carrier Group & Charging Handle | AR-10 | .308/7.62/6.5 Creedmoor/8.6 BLK/.243 | 9310 Bolt | 8620 Carrier
The Davidson Defense LR-308 Nitride Bolt Carrier Group with Aluminum Charging Handle delivers reliable cycling and durability for AR-10 platform rifles. Engineered for compatibility with .308 Win, 7.62 NATO, 6.5 Creedmoor, 8.6 Blackout, and .243 Win, this BCG features a 9310 alloy steel bolt and 8620 alloy steel carrier body, both treated with corrosion-resistant nitride finishing for enhanced wear resistance and longevity. The included LR-308 aluminum charging handle is machined from 6061-T6 aluminum with Type II hard coat anodizing and features an extended latch for quick, positive manipulation. This combination provides the precision and durability demanded by competitive shooters, tactical users, and builders seeking dependable performance across diverse shooting applications.
Key Features
- 9310 Alloy Steel Bolt: High-strength material with nitride finish for exceptional durability and corrosion resistance
- 8620 Alloy Steel Carrier: Robust carrier body with nitride treatment for reliable cycling and extended service life
- Multi-Caliber Compatibility: Works with .308 Win, 7.62 NATO, 6.5 Creedmoor, 8.6 BLK, and .243 Win chamberings
- LR-308 Aluminum Charging Handle: 6061-T6 aluminum construction with Type II hard coat anodized finish and extended latch
- Complete BCG & CH Package: Includes both bolt carrier group and charging handle for convenient assembly
Perfect For
- AR-10 builders seeking reliable bolt carrier groups for precision rifle and tactical applications
- Shooters running multiple large-frame calibers who need versatile BCG compatibility
- Competitive shooters demanding consistent cycling and durability across high round counts
- Gunsmiths assembling or servicing LR-308 pattern rifles for clients
Advanced Nitride Surface Treatment
The nitride finishing process applied to both the bolt and carrier body penetrates the steel surface, creating a hardened layer that significantly exceeds the wear resistance of standard phosphate or chrome treatments. This treatment provides superior protection against corrosion, reduces friction for smoother cycling, and simplifies cleaning by making carbon deposits easier to remove. The black nitride finish also maintains its appearance through extended use, resisting the wear patterns that quickly develop on softer coatings.
High-Strength Steel Alloys
Davidson Defense selects 9310 alloy steel for the bolt based on its proven track record in high-pressure applications—this material offers excellent fatigue resistance and the strength needed to handle the larger cartridges used in AR-10 platforms. The 8620 alloy steel carrier body provides the toughness and impact resistance required for thousands of reliable cycling operations. Together, these materials create a bolt carrier group engineered to meet the demands of full-power rifle cartridges without premature wear or failure.
Broad Caliber Versatility
This BCG's compatibility spans from the hard-hitting .308 Winchester and 7.62 NATO to the precision-oriented 6.5 Creedmoor and newer 8.6 Blackout, plus the flat-shooting .243 Winchester. This versatility makes it an excellent choice for shooters who maintain multiple AR-10 uppers in different calibers, allowing one BCG to serve across platforms. The bolt face and extractor are properly dimensioned for reliable extraction and ejection across this caliber range, ensuring consistent function regardless of which cartridge you're running.
Extended Latch Charging Handle
The included LR-308 charging handle features an extended latch that provides increased surface area for manipulation, making charging operations faster and more positive in all conditions. Whether you're wearing gloves, performing press checks, or clearing malfunctions under stress, the extended latch geometry improves leverage and reduces the effort required. The 6061-T6 aluminum construction keeps weight minimal while the Type II hard coat anodizing delivers a durable, wear-resistant surface that withstands repeated use.
Engineered for Competitive and Tactical Use
This BCG and charging handle combination meets the performance standards demanded by both competitive shooters and tactical users. The smooth, reliable cycling supports rapid strings of fire for competition stages, while the corrosion-resistant finishes and robust construction ensure dependable function in adverse field conditions. The nitride treatment's self-lubricating properties reduce maintenance requirements, allowing you to focus on shooting rather than constant cleaning and lubrication.
Follow safe handling practices and manufacturer instructions for installation and use. The BCG is compatible with multiple calibers—ensure the complete upper assembly matches your intended chambering and use only appropriate ammunition. Verify proper headspacing and function testing before live fire. Ensure compliance with all applicable federal, state, and local laws.
