Grendel Hunter 6.5 Grendel / 6mm ARC / .22 ARC Bolt Carrier Group
Price range: $129.99 through $199.99
Bolt Carrier Group Details
BCG Technical Specifications:
Carrier: M16 Auto Profile (8620 Steel) for smooth cycling and increased mass.
Gas Key: 4130 Steel with properly staked Grade 8 fasteners.
Bolt: 6.5 Grendel (Type 2) / 6mm ARC / .22 ARC (9310 Steel)
Small Parts: 4140 Steel Cam Pin and Hard Chrome Firing Pin.
The Grendel Hunter BCG: Precision-Tuned Reliability
Optimized Extractor Tension: Excessive tension is a leading cause of malfunctions and extractor failure. We are meticulous about our extractor tension being at the “sweet spot”—ensuring reliable cycling without putting unnecessary stress on the steel.
Radiused Extractor Geometry: We avoid the “sharp fangs” found on most extractors. By having smooth corners on the extractor claw, we prevent the steel from digging into the brass case rim, ensuring the ejector can “kick” the brass out at the exact right microsecond for a clean ejection cycle.
Built to Last: Our bolts are machined from 9310 Steel, shot-peened for fatigue resistance, and Magnetic Particle Inspected (MPI).
Professional Grade Finishes
We offer four distinct finishes, each offering a significant upgrade over the old Mil-Spec phosphate in terms of lubricity, hardness, and ease of cleaning.
BCG Finish Specifications
Black Nitride
Surface Hardness: ~740 HV (Vickers)
The Process: A salt-bath thermo-chemical treatment that hardens the steel.
The Benefit: Far more durable and smoother than original Mil-Spec magnesium phosphate with excellent corrosion resistance.
Nickel Boron (NiB)
Surface Hardness: ~1800 HV (Vickers)
The Process: UCT EXO® (High Boron content).
The Benefit: An extremely hard, durable finish with a very low friction coefficient. It’s smooth and wipes clean easily.
DLC (Diamond-Like Carbon)
Surface Hardness: ~2300 HV (Vickers)
The Process: Next-level Plasma Enhanced Chemical Vapor Deposition (PECVD)
The Benefit: High hardness, Excellent abrasive wear resistance, Low thermal conductivity, Ultra-Low friction level.
P51+ High Polish Black
- Surface Hardness: ~2300 HV (Vickers)
- The Benefit: The same attributes of our DLC, but it receives extra polishing cycles to give it an EXTREMELY smooth and deep, black finish.Â
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Additional information
| Weight | .8 lbs |
|---|---|
| Dimensions | 7.9 × 1.5 × 1.9 in |
| Finishes | Black Nitride – The nitriding process involves a salt (chemical) bath which provides corrosion resistance and hardens the surface of the steel (~740 HV). This thermo chemical treatment gives you a far more durable and smoother finish than the original Mil-Spec magnesium phosphate. |
31 reviews for Grendel Hunter 6.5 Grendel / 6mm ARC / .22 ARC Bolt Carrier Group
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Tom (verified owner) –
Love my 6.5 Grendel BCG I got from Grendel Hunter. I think the extra money for the DLC coating was well worth it. Already took it to the range and it ran perfectly.
Anthony Brown (verified owner) –
Very quick shipping, product appears to be quality made. Head spaced is perfect. I would definitely recommend this product.
Mark (verified owner) –
This is an awesome bolt carrier group. Super smooth functionality and super easy to clean. THE BEST!!!!!
Benjamin Decker (verified owner) –
I have not been able to shoot my build yet but as of now I am very pleased with this BCG quality smooth and silky quiet action.
Scott (verified owner) –
I purchased this for a build in almost done with so this review is based on unboxing and first impressions. Overall construction is 5 stars. No marks of any kind on the bolt or carrierand the coating is smooth and consistent. Although I haven’t fired it yet I’m confident it will perform as expected.