ERGO AR-15/M16 BOLT CARRIER GROUP (BCG)

Name: ERGO AR-15/M16 BOLT CARRIER GROUP (BCG)
SKU: 4958-(B)
Availability: InStock

WARNING

$134.75

The ERGO AR-15/M16 Bolt Carrier Group is mil-spec M16 with forward assist serrations. Everything is Melonite coated (black nitride) except the extractor (phosphate) and the firing pin (chrome).

All parts are made, coated and assembled in the United States of America.

Cannot be shipped to Washington or NY.

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In stock

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SKU: 4958-(B) Categories: AR-15, No Ship NY, Replacement Parts

Description

True Mil-Spec Bolt Carrier Group
Material: Case Hardened 8620 Steel
Finish: Black Nitride
Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked
Cam Pin: Hardened 4340 cam pin
Firing Pin: Mil Spec firing pin made of 8740 steel, center-less ground and Hard Chromed
Bolt Assembly: The Bolt is Mil Spec dimension and external surfaces are CNC ground after heat treat for a precision fit
Bolt Material: Case Hardened 9310 Steel.
Finish: All Bolt components Shot Peened and Black Nitride (except extractor)
Extractor: 4340 Steel , Manganese Phosphate coated
Mil Spec Extractor Spring and O-Ring Combination
MPI: Magnetic Particle Inspected
100% Made and Assembled in the USA
Bolt: 9310 material, shot peened, MPI tested and hard engraved