Heavy-Duty 6.5 Grendel, 6mm ARC, and .22 ARC Bolts
If your 6.5 Grendel, 6mm ARC, or .22 ARC bolt just broke, you aren’t alone. These bigger AR-15 calibers have a reputation for shearing lugs and breaking extractors. We sell a lot of replacements to guys who bought elsewhere first.
Ours to put an end to their troubles. It is incredibly rare that we ever have to replace one of our bolts—and when we do, it’s usually due to a bad over-pressure round, not the bolt itself. If you want a bolt that actually lasts, this is it.
Fixed Extractors, Fewer Malfunctions A lot of guys mistake extraction issues for gas system problems. Standard extractors have sharp edges and “teeth” that dig into the brass case and won’t let go on time. They also tend to have excessive extractor tension. Both of those things cause constant malfunctions. We radius the corners of our extractors so they glide over the rim smoothly and are very careful about proper tension so your brass is sure to release perfectly every single time.
Additional information
| Weight | 0.094 lbs |
|---|---|
| Dimensions | 3.5 × .9 × .9 in |
| Finish | Nitride (Black Nitride), NiB (Nickel Boron), DLC (Diamond Like Carbon) |
61 reviews for 6.5 Grendel / 6mm ARC / .22 ARC Bolt
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David Jones (verified owner) –
Works great
John Cassisa (verified owner) –
I’ve built several different AR15s over the last few years, and never really had a problem with any of them until I built one chambered in 6.5 Grendel. It wouldn’t cycle a 2nd round after firing the first. I narrowed it down to the extractor. It looked ok, but I already tried everything else. Tired of dealing with it, I decided to just buy the whole bolt assembly. Luckily, I found Grendel Hunter. I got a really good upgraded bolt assembly, delivered really quick, and for a better price than anyone else. No problems installing it and it functions like a dream. They have earned a lifelong customer.
Josh VanSteenwyk (verified owner) –
It’s an AR bolt, it works. Used for a 338 ARC build and was less expensive than my wholesale distributor. Well done.
Larami (verified owner) –
Fits in any standard ar15 carrier, headspace matches up perfectly with Satern chamber
PstCntrl (verified owner) –
The extractor is key to Grendel, IMO. But in my case the complete bolt 100% fixed my issues. I accidentally ended up with a nice 18″ rifle gas Stag Arms upper in 6.5 Grendel – ordered 350 Legend and they mixed things up. It was so nice, I asked to keep it. It came with a 5-round Duramag. I paired it with a nice Diamondback complete lower and ordered some AAC ammo. Went to zero and was getting good groups but various failures – to extract, to feed, double-feeds, weak ejection, and maimed brass necks. And failure to lock back on empty.
I went through all buffer weights: H3, H2, H, carbine. Suspected that maybe the gas block was misaligned (mine is not adjustable). Was going to polish the chamber, modify mags, etc. Reading more on it I started realizing that the bolt, and especially extractor might be to blame. Sure enough, my generic brand extractors were sharp, creating “teeth” or “fangs” that are the downfall of larger rim cartridges like 6.5G. Yes, they were designated “6.5 Grendel Type II” bolts/extractors but they were sloppy.
Ordered 2 bolts and 2 additional extractors from Grendel Hunter, to get the free shipping, and to have extras. Tried both: GH extractor in my generic bolt, and the complete GH bolt in my generic carrier. Both worked 100% – 4:30-ish ejection, no stoppages – all with unmodified Duramags, stock carbine buffer and spring. With the generic bolt I still saw a failure to lock back on empty, so I just went with the full GH bolt, and will just run them. 40 rounds in one session, no stoppages.
When I compared them, it is very obvious that the Grendel Hunter extractors are very deliberately shaped and smoothed to avoid the “fangs” grabbing the rim and preventing a clean ejection. Someone very obviously gave attention to geometry, and tested the design.
Very excited to confirm at long distances and take this out this fall for deer season! As for my generic sloppy bolts/extractors, I will try dremeling them to shape and maybe testing them with some cheap steel case ammo, if I ever run into it 🙂
If you don’t yet have a BCG for your Grendel, just order the whole thing from GH, or two. If you have a decent carrier, then just order a couple of bolts from GH, and a couple of extractors as spares. I believe it’s a great idea to have a complete spare BCG, not just extra small parts. Swapping in a BCG takes seconds. Swapping in a bolt takes minutes and risks losing small parts. Swapping an extractor takes a few more minutes, and you have to deal with the small spring/insert. Swapping ejectors in the field is unlikely, and it’s frustrating enough at the bench 🙂