AT3™ AR-15 Nickel Boron Bolt Carrier Group - 6.5 Grendel/6mm ARC

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SKU: BCG-65TYPEII-NIB

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Product description

Run Your 6.5 Grendel or 6mm ARC Upper Right with a NiB BCG

It’s important to have a bolt carrier group that has everything you need.  MPI inspected bolt, properly staked grade 8 gas key screws, chrome plated firing pin, plus a lifetime warranty, just in case.  There’s plenty of tough finishes out there too, but few are as slick and tough as Nickel Boron.

Nickel Boron (NiB) coated bolt carriers have greater lubricity than your standard phosphate finish, and are easier to clean than black nitride.  At the very least, it’s easier to see how much carbon you can wipe off to reveal the chrome-like finish after a day of shooting.  And it’s a perfect match for a 6.5 Grendel Type II barrel, or the new 6mm ARC.

The BCG is the workhorse of your rifle – and it pays to have one that runs reliably.  And it’s easy to keep this one in tip-top condition for a lifetime of use.

Made in the USA

Specifications:

  • Caliber: 6.5 Grendel Type II or 6mm ARC
  • Bolt Face Recess: .136″
  • Finish type: Nickel Boron (NiB)
  • Carrier Type: M16 Auto (Ideal for AR-15)
  • Carrier Material: 8620 Gun Steel
  • Gas Key Material: 4130 Steel
  • Gas Key Screws: Grade 8
  • Bolt Material: MPI tested 9310 Steel, Shot Peened
  • Extractor Material: 4140 Steel
  • Cam Pin Material: 8620 Steel
  • Firing Pin Material: 4140 Steel, Chrome Plated
  • Mil-Spec O-Ring and Gas Rings

Customer reviews 13

jamie.eppinette Verified buyer
Very pleased with this BCG & bolt for a 338ARC build if been working on.
Josh Verified buyer
Really nice product but it's not the polished bolt carrier in the picture, I received one that wasn't polished.
WildViking Verified buyer
So far been great well fitted to the barrel breech smooth cycling. Definitely get the bang for the buck. At half the price of big name brands with same quality.
Vernon Betts Verified buyer
I didn't think anyone could actually beat the fit, finish and precision fitment of Aero Precision stripped Upper/Lower/Handguard components...until now. Just finished a 6 ARC build with AT3 components. Everything fit so snuggly and precisely, that I decided to order an AT3 BCG in nickel boron to compliment the titanium finish on the rifle. Perfect match! Cycles and runs smoothly. Can't comment on durability yet (too new), but it sure cleans up nicely with just a rag and Q-Tip. Ive purchased many items from AT3, but this was my first frame and bolt. Never waited more than 7 days for anything... but Iowa and Minnesota are close neighbors. Im a happy builder. The recipient of this rifle will be even happier when he cradles this beauty in his arms.
brian k.smith Verified buyer
excellent bolt

AT3 Tactical · Thank you for taking the time to leave a review for our AT3™ AR-15 Nickel Boron Bolt Carrier Group. We're glad to hear that you found it to be an excellent bolt. We strive to provide top-quality products for our customers and it's great to know that we hit the mark for you. Thanks again for your support!

justin.taylor Verified buyer
Idk I hope it works haven't been out yet it's February in minnesota to cold still

Robbie · 3 stars despite not having used it? Actually, reviewing before using it seems incredibly odd. I will say what the manufacturer won’t say… what the f*ck are you doing? Review after or don’t review at all.

AT3 Tactical · Hi there, thanks for leaving a review on our AT3™ AR-15 Nickel Boron Bolt Carrier Group. We appreciate your feedback and hope that you will have the opportunity to use it soon. We understand that the weather can be a factor, but we have full confidence that our product will work well for you when you do get the chance to use it. Stay warm in Minnesota!

jim1949hill Verified buyer
I havent gott it yet the shipping is screwed up
George Cella Verified buyer
Excellent. Fit and finish were superb. Worked flawlessly. I highly recommend it.
ronald.nelson Verified buyer
Bought this for my first AR build in 6 ARC researching coatings like everyone does and went with this it has been flawless have only around 250 through it with no issues easy to clean will be getting another for 22 ARC build

AT3 Tactical · Thank you for leaving us a review for our AT3™ AR-15 Nickel Boron Bolt Carrier Group in 6.5 Grendel/6mm ARC. We're thrilled to hear that it has been running smoothly with 250 rounds through it and that it was easy to clean. We appreciate your support and look forward to potentially helping you with your 22 ARC build in the future. Thanks again!

ronald.nelson Verified buyer
Purchased this for a 6 ARC build Works flawlessly easy to clean paired with a Armaspect silent buffer system not one FTF or jam, remember if using Armaspect buffer remove your detent to prevent bolt bounce. Will be adding another for a 22ARC build AS always fast shipping
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The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

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