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NBS .223/5.56/300 BLK Complete Bolt Carrier Group – Nickel Boron

From $104.95

SKU: nbs-223-556-complete-bcg-nib Category:
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
Additional information
Weight 5.232 oz
Options

w/ Logo, w/o Logo
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
Bolt Finish

Nickel Boron
MPN BCG-NIB