Phosphate coating and chrome lining offer exceptional protection against wear and corrosion, making them a popular choice for those prioritizing reliability and longevity in their firearms. The phosphate coating provides a strong initial protective layer, while the chrome lining enhances durability and resistance to the stresses of repeated firing.

M16 auto profile carrier machined from aircraft and bearing quality 8620 steel, properly heat-treated, precision ground and finished with a chrome-lined phosphate coating for durability and corrosion-resistance
Bolt machined from a 1-piece of aircraft/bearing quality 9310 steel, properly heat-treated, precision ground, shot-peened, MPI tested and finished with a phosphate coating
Firing pin machined to Mil-Spec print from 8740 steel, precision ground and chrome-plated for durability and corrosion-resistance
1-piece billet, fully machined enhanced extractor with a phosphate coating for increased reliability and corrosion-resistance
Phosphate-coated cam pin
S7 tool steel ejector and extractor retaining pin for enhanced strength and durability
4130 steel gas key with a chrome-lined phosphate finish, precision staked using a hydraulic staking machine for durability and secure fastening
KAK carrier key screws with T25 drive, grade 8 and proper heat treatment for durability and secure fastening

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It is the customer’s responsibility for understanding state laws regarding all purchases made. For a comprehensive list of all Shipping Restrictions, please refer to our Shipping Restrictions By State Page found Here.

All NFA Rules Apply

These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).

KAK Industry Bolt Carrier Group 5.56x45mm/.300 AAC Blackout, Black