Nickel Boron Bolt Carrier Group (BCG) for AR15 - $89.99 + $19.95 S/H

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

SKU: ACAR-UBC02