Toolcraft BCG Nickel Boron AR15 / M16 Auto Bolt Carrier Group 9310 or C158 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 or C158
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
Toolcraft AR15 BCG Nickel Boron Bolt Carrier Group
- Brand: Toolcraft
- Product Code: TOOLCRAFTBCGAR15NIB
- Availability: Out Of Stock
- $179.95
- $109.95
- Free Shipping