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M4 / AR-15 BOLT / BOLT CARRIER GROUPS
M4 / AR-15 BOLT / BOLT CARRIER GROUPS
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M4 / AR-15 BOLT / BOLT CARRIER GROUPS

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On sale: $99.99 $89.99
Retail Price:$134.99
You Save:$45.00(33%)
The AR-15 / M4 .223 Bolt Carrier Groups are standard mil-spec with Carpenter 158 bolts and have been shot peened and mag pen tested. The carrier is made from 8620 alloy steel. Coatings: Hard chrome carrier bore; hard chrome gas key bore; manganese
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Part Number: YHM-BCBT-556
Availability: Out of Stock - 0

Weight : 1

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The M16 5.56 /.223 / .300 AAC Complete Bolt and Carrier Group is Phosphate coated and Chrome Lined. The Carrier is made from 8620 steel, and the Bolt is made from 9310 steel and Phosphate coated, MPI Tested.  They are are standard mil-spec with Carpenter 158 bolts and have been shot peened and mag pen tested. The 223 Bolt and Bolt Carrier Assembly comes complete with Cam Pin, Firing Pin and Firing Pin Retainer.

Coatings: Hard chrome carrier bore; hard chrome gas key bore; manganese phosphate finish per mil spec.

  • BOLT: Made From 9310 Steel
  • BOLT FINISH: Phosphate
  • CARRIER: Carrier Assembly Made From 8620 Steel
  • CARRIER FINISH: Phosphate, Chrome Lined
  • TREATMENT: Non RF85
  • COMPATIBLE: AR-15 Platform, 5.56, .223, .300 BLK
  • ADDITIONAL SPECS/NOTES:  Drop In Ready, MPI Tested

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