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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Price range: $74.99 through $87.99 Select options This product has multiple variants. The options may be chosen on the product page -
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Scott Lassell (verified owner) –
Excellent BCG. I decided to spend a little extra over the Nickel and purchased the DLC and am glad I did. The finish is first rate. I put about 40 rounds through it and amazingly, minimal carbon build up. Actually cleaned up with oil and a rag. No scraping needed. It appears sturdy and I expect it hold up well. Grendel Hunter provided excellent follow through and shipping took less than a week. Keep up the good work. I will be back.
Chris Herrera (verified owner) –
Was initially going to purchase the NiB bcg as I own a couple and really like them, but after reading the reviews here I decided to get the DLC bcg to try something new. After a hundred rounds through the rifle I have to say this is a bit nicer than the NiB bcg due to the ease of cleaning and super smooth finish. It ran smooth with no issues to this point in my 22 ARC.
Craig Callahan (verified owner) –
Awsome addition and upgrade to my F-1 billet MSR.
Scott P (verified owner) –
The BCG came well packaged and works great in my rifle. I’m super pleased with the quality of the BCG. It arrived quickly to my house after ordering it.
Jarrod (verified owner) –
I was really impressed with the quality of this bolt. Solid bolt, cleans easy and stays slick even when fired multiple rounds suppressed.