Description

Description
NBS Nickel Boron Bolt Carrier Group for .223/5.56/300BLK
Carrier
- M16 style (Auto)
- Machined from 8620 tool steel
- Heat treated to mil spec
Bolt
- Machined from 9310 tool steel
- Heat treated to military specifications
- Shot Peened
- MPI (Mag Particle Inspected)
Gas Key
- Machined from 17-4 Stainless Steel
- Heat treated to mil spec
Extractor
- Machined from S-7 shock resisting tool steel
- Heat treated to mil spec
- Shot peened
- Extractor spring is made of stainless steel music wire
Firing Pin
- Machined from 17-4 stainless steel
- Heat treated to milspec
Specifications
- Weight: 11.6 oz
- Length: 7.5″
- Finish: Nickel Boron (NiB)
- USA Made
- Covered by NBS Limited Lifetime Warranty
Weight 0.3270 oz Options
w/ Logo, w/o Logo
Bolt Finish
Nickel Boron
Bolt Material
9310 Steel
Cartridge Compatibility
.223/5.56 NATO/.300 BLK
Finish
Nickel Boron
Carrier Profile
M16
High Pressure Tested
Untested
Magnetic Particle Inspected
Magnetic Partical Inspected
Platform
AR-15
Brand
nbs
SKU: nbs-223-556-complete-bcg-nib
4487

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