ODIN Works Bolt Carrier Group — AR-10/.308, Black Nitride | Model ACC308BCG | UPC 857116007115
Heavy-Duty .308 BCG Built for Smooth Cycling and Long Service Life
Upgrade your large-frame AR with the ODIN Works AR-10 Bolt Carrier Group in black nitride. Purpose-built for .308/7.62×51-class rifles (DPMS/SR-25 pattern*), this complete BCG delivers slick operation, excellent corrosion resistance, and easy cleanup thanks to its nitride treatment—inside and out. Whether you’re assembling a precision LR-308, a hunting rig, or a hard-use training rifle, ACC308BCG provides the reliability and consistency you want at the heart of your build.
*Most modern “AR-10” rifles use the DPMS/LR-308/SR-25 pattern. Always verify your receiver pattern and compatibility before purchase.
Key Features at a Glance
Platform: Large-frame AR (AR-10/LR-308/SR-25 pattern)*
Caliber Range: .308 Win / 7.62×51, with cross-compatibility for many 6.5 Creedmoor/6mm-based large-frame builds (headspace/compatibility required)
Finish: Black nitride (QPQ) for reduced friction, easy cleaning, and superior wear/corrosion resistance
Complete BCG: Carrier, bolt, cam pin, firing pin, and firing pin retainer included
Gas Key: Hardened, securely staked gas key to help maintain seal under heat and high round counts
Drop-In Ready: Assembled unit for straightforward installation and function checks
Model / UPC: ACC308BCG / 857116007115
Compatibility note: Large-frame ARs are not fully standardized. Confirm bolt face, extension, and receiver pattern before use and always headspace with your chosen barrel.
Why Builders Choose ODIN Works for BCGs
Nitride Smoothness, Inside & Out
Black nitride transforms the steel surface to increase hardness and reduce friction. Carbon wipes off more easily, cleaning times drop, and the slick surface helps sustain reliable cycling during long sessions.
Reliability You Can Feel
A properly staked gas key and precise carrier geometry support consistent gas delivery and dependable extraction/ejection—critical for .308 rifles where gas timing can be more finicky than 5.56 platforms.
Built for Round-Count Reality
From carbine courses to backcountry hunts, the BCG is the beating heart of your rifle. ODIN Works focuses on materials, fit, and finish so you get a component that holds up to heat, speed, and weather.
Ideal Use Cases
Precision & Hunting LR-308 Builds: Smooth operation for suppressed and unsuppressed setups (with proper gas tuning).
Training & Range Rifles: Lower-friction nitride surfaces simplify maintenance between high-round days.
Crossover 6.5/6mm Large-Frame Projects: Use an appropriate bolt face and always verify headspace with your barrel.
What to Expect in the Box
Complete AR-10/.308 BCG (carrier + bolt assembly + cam pin + firing pin + retaining pin)
Pre-assembled and ready for lube, install, and function checks
Many shooters notice an easier wipe-down and fewer stubborn carbon deposits compared to phosphate-finished carriers.
Installation & Setup Tips
Verify Pattern: Confirm your upper/bolt/barrel extension are all DPMS/SR-25 pattern (or the pattern your rifle uses).
Headspace Matters: Always check headspace with GO/NO-GO gauges matched to your chambering.
Proper Lube: Even with nitride, lube the bolt lugs, gas rings, and carrier rails before firing.
Gas & Buffer Tuning: Large-frame ARs vary—use quality mags, confirm gas block alignment, and consider buffer/spring tuning for your load and (if applicable) suppressor.
Function Check: Verify lock-back on empty, ejection pattern, and consistent feeding during your first range session.
Technical Specifications (ACC308BCG)
Brand: ODIN Works
Product Type: Bolt Carrier Group (complete)
Platform: AR-10 / LR-308 / SR-25 pattern*
Finish: Black nitride (QPQ)
Included Components: Carrier, bolt, cam pin, firing pin, firing pin retaining pin, staked gas key
Model Number: ACC308BCG
UPC: 857116007115
Material specifics (e.g., carrier/bolt steel) and small detail revisions may vary by production lot. ODIN Works’ published spec sheet is the source of truth for a given batch.
Frequently Asked Questions
Q: Will this fit my Armalite-pattern AR-10?
A: Many modern rifles labeled “AR-10” actually use the DPMS/SR-25 standard. If your rifle is true Armalite pattern, verify compatibility with the receiver and barrel extension before purchase.
Q: Is it good for 6.5 Creedmoor?
A: The carrier is the same; the bolt face must match your cartridge. This BCG ships with a .308-class bolt. Always headspace with your barrel.
Q: Do I still need to lube a nitride BCG?
A: Yes. Nitride lowers friction, but proper lubrication is essential for reliability and wear reduction.
Q: Is the gas key staked?
A: Yes, the gas key is securely staked to help prevent fasteners from backing out under heat and recoil.
Care & Maintenance
Clean & Lube: Wipe carbon, inspect extractor, ejector, and gas rings; re-lube contact points.
Inspect Staking & Screws: Periodically verify gas key integrity and overall wear patterns.
Track Round Count: Replace wear items (extractor springs, gas rings) on a sensible schedule, especially for suppressed rifles.
SEO-Rich Highlights & Buyer Keywords
ODIN Works AR-10 bolt carrier group
Black nitride .308 BCG, DPMS/SR-25 pattern
Complete BCG with staked gas key for reliability
ACC308BCG, UPC 857116007115
Large-frame AR nitride carrier for smoother cycling and easy cleaning
Meta Title (SEO)
ODIN Works AR-10 Bolt Carrier Group — .308, Black Nitride, Complete BCG | ACC308BCG
Meta Description (SEO)
Upgrade your LR-308 with the ODIN Works AR-10 BCG. Black nitride finish, staked gas key, and complete carrier/bolt assembly for reliable cycling and easy maintenance. Model ACC308BCG, UPC 857116007115.
Structured Data (Product Schema JSON-LD)
Responsible Use Reminder
Always verify receiver pattern and headspace with your barrel before live fire. Follow safe handling practices, confirm reliable function with your chosen ammunition, and re-inspect after initial heat cycles—especially if shooting suppressed.
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