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AO Precision C158 SP/HPT/MPI 5.56 Bolt Carrier Group – Black Nitride - 00-BCG-M16MP-N

Original price was: $169.95.Current price is: $89.95.

In stock: 126 in Raleigh - NC, 13 in Bakersfield - CA


Limit: per order.
SKU: 5877 Categories: , , , , Brand:
Description

Right here is a True Mil-Spec BCG. This unit is for builders who prefer tried and true manufacturing and aggressive quality assurance testing over fancy coatings, proprietary profiles and laser engraved logos.

Bolt

  • Machined from Carpenter Technology No. 158 alloy.
  • Heat treated
  • Shot peened per ASTM B851/SAE AMS2430S
  • Individually High Pressure Tested (test fired)
  • Individually Magnetic Particle Inspected
  • Manganese Phosphate Finish

Extractor

  • Tool Steel Extractor
  • Black Nitride Phosphate Finish
  • Mil-Spec O-Ring

Carrier

  • Machined from AISI 8620 aircraft quality alloy per ASTM A108/A322-13
  • Full Mass M16 Profile
  • Stress Relieved
  • Hard Chrome Bore
  • Black Nitride

Gas Key

  • Machined from 4130 chromoly steel alloy per ASTM A108/A322-13
  • Grade 8 Hardware
  • Properly Staked
  • Hard Chrome Internal
  • Permatex sealed

Like all NBS parts, this unit is backed by a lifetime warranty.

Additional information
Weight 0.713 oz
Bolt Material

Carpenter 158 Steel
Cartridge Compatibility

.223/5.56 NATO/.300 BLK
Finish

Salt Bath Nitride
Carrier Profile

M16
High Pressure Tested

Individually HP Tested
Magnetic Particle Inspected

Magnetic Partical Inspected
Platform

AR-15
Bolt Finish

Mag Phosphate
MPN 00-BCG-M16MP-N
UPC 5877