ERGO AR-15/M16 9MM BOLT CARRIER GROUP (BCG)

Name: ERGO AR-15/M16 9MM BOLT CARRIER GROUP (BCG)
SKU: 4955-(B)
Availability: OutOfStock

WARNING

Original price was: $137.50.Current price is: $100.00.

The ERGO AR-15/M16 9MM Bolt Carrier Group allows you to make your own custom 9mm AR. Constructed from a single piece of steel billet and fits Colt & Glock 9mm style AR-15 and M16 rifles.

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

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SKU: 4955-(B) Categories: 15 Off, ERGONAUT, Replacement Parts, Sale, AR-15, Accessories

Description

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