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Fail Zero built this bolt carrier group specifically for AR-15 rifles chambered in 6.5 Grendel (Type 2), and it shows up fully assembled and ready to drop right into most mil-spec uppers. The standout is the EXO Nickel Boron treatment on all the critical parts, which gives you permanent dry lubricity, stronger wear and corrosion resistance, and a bright silver surface that carbon just doesn't want to stick to. That slick finish means smoother cycling and a lot less scrubbing when it's time to break the rifle down.
The carrier is machined from 8620 steel with an M16 cut, giving you the full-mass profile that most builders prefer for reliable, consistent cycling. The bolt is made from 9310 steel, shot peened, and magnetic particle inspected, so you know the parts have been vetted before the coating ever goes on. Fail Zero runs its EXO process in-house in North Carolina, and they've been a pioneer of nickel boron coating in the AR world for years.
The EXO coating does more than look good. Because it reduces friction across the moving parts, this BCG runs smooth even when it's dirty, and it wipes clean with far less effort than a phosphate or nitride carrier. Plenty of folks who've switched to Fail Zero point out how easy the cleanup is and how well the finish holds up round after round.
This is a Type 2 bolt, which is the far more common Grendel spec these days. It's important not to mix a Type 2 bolt with a Type 1 barrel, since the two use different headspace tolerances and are not interchangeable. If you're running a modern 6.5 Grendel barrel, you're almost certainly Type 2, but it's always worth confirming your barrel spec before you install. This model ships without a hammer, so you'll reuse the one already in your lower.
This is a Type 2 bolt, which is the most common 6.5 Grendel configuration on modern rifles. Type 1 and Type 2 use different headspace tolerances and cannot be mixed, so pair this bolt only with a Type 2 barrel. If you bought your barrel in recent years it's very likely Type 2, but check the spec before installing.
EXO Nickel Boron is Fail Zero's coating applied to the critical wear parts of the carrier group. It provides permanent dry lubricity, cuts friction for smoother cycling, and boosts wear and corrosion resistance. It also makes carbon much easier to wipe away, so cleanup takes a fraction of the effort of a standard carrier.
No, this version ships without a hammer, which is what the 'No Hammer' designation refers to. You'll use the hammer already installed in your lower receiver. The BCG itself arrives fully assembled and ready to install.
Yes, it's built to drop right into most mil-spec upper receivers chambered in 6.5 Grendel Type 2. The M16-cut 8620 carrier is the full-mass profile, so it cycles like a standard AR-15 carrier group. Just make sure your upper and barrel are set up for 6.5 Grendel, since this bolt runs that caliber only.
| UPC | 881314861811 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | FZ-6.5-Grendel-01-NH |
| Color | Silver |
| Product Type | Bolt Carrier Group |
| Shipping Weight | 0.807 |
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