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Toolcraft BCG Nickel Boron AR15 / M16 Auto Bolt Carrier Group 9310 MPI Tested

All manufacturing and coating is done by Toolcraft.

100% Made in USA and includes Lifetime Warranty from Toolcraft. If ever a problem, simply call Toolcraft and they will take excellent care of you with their no questions asked Lifetime Warranty.

Bolt Assembly:
​Bolt: AISI 9310 alloy steel
MPI Inspected
Extractor: Shot Peened Hardened D2 tool steel 
O-Ring: Mil-Spec 
Gas rings (3): Mil-Spec 
Finish: Nickel Boron

Bolt Carrier:
8620 steel
Heavy Duty M16 design
Grade 8 Gas Key Screws, Staked
Gas Key Material: 4140
Finish: Nickel Boron

Cam Pin:
8620 steel
Finish: Nickel Boron

Firing Pin:
mil-spec firing pin made from centerless ground 8740 steel, hard chrome coated

Just received my 4th Tool Craft nickel boron BCG from Tom's. I am so impressed that I have replaced all my AR bolts with this Tool Craft model. It's works flawlessly. Smooth, easy to clean and needs little to no lubrication. And fast and free shipping.


This will be my new "go to" bcg. So smooth and it looks cool too.


Works and functions flawlessly, will definitely be purchasing another. Cleans up super easy as well. Tom's Tactical has amazing service and shipping is always super fast, I get stuff quicker from you guys down in Texas than I have from guys waaayyyy closer.


Excellent smooth slick nickel boron finish. Looks like it will last forever. I'm new to the ar. Just finished my first build. Showed to experienced Shooters. They're impressed. Great price, free shipping, arrived in mail box 3 days from order. Oh yeah lifetime warranty. I'll be back.


I was looking for a NiB BCG for a while. I did my research and found out that Tool Craft are the ones who make everybody’s BCG. Names like Daniel Defense and Spike,s Tactical. ‘This BCG has now been through 2500 rounds. The only cleaning ive had to do was a quick wipe down. No scrubbing, scratching off burnt on carbon, and only the minimum lube needed to keep this running a 7.5” pistol or a 11.5” SBR. Flawless finish and a damn fine durability rating from me.


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Toolcraft AR15 BCG Nickel Boron Bolt Carrier Group

  • Brand: Toolcraft
  • Availability: In Stock
  • $119.95
  • Free Shipping

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