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Lightweight, hard-chrome durability for high-round performance. The Faxon Superfinished 5.56 M16 Bolt Carrier Group — Chrome (SKU: FF556BCGCNITRIDE-CR, UPC: 816341029699) blends mil-spec strength with a low-friction superfinish and hard chrome coating to deliver reliable, long-lasting performance in demanding shooting applications.

Key Features & Highlights

  • Bolt Material: 9310 tool steel bolt, fully heat-treated
  • Finish: Hard chrome-coated bolt, carrier, gas key, and cam pin (68–72 HRC on wear surfaces)
  • Carrier Body: Superfinished for reduced friction and minimized fouling
  • Inspection: Magnetic Particle Inspection (MPI) tested bolt
  • Extractor: S7 extractor with spring, insert, and “crane” O-ring installed
  • Compatibility: Full-auto rated for M16 platforms and mil-spec AR-15 rifles
  • Hardware: Gas key secured with Grade 8 fasteners and fully staked
  • Weight: Optimized for reliable cycling while reducing reciprocating mass
  • Markings: Laser-engraved Faxon Shield

Why Choose the Faxon Superfinished M16 BCG?

This BCG is engineered for shooters who demand durability, low maintenance, and consistent function under high round counts. The hard chrome finishing and superfinished carrier body reduce carbon adhesion and friction, resulting in smoother cycling and easier cleaning.

Benefits

  • Superior wear resistance: Hard chrome finish extends service life under heavy use
  • Low maintenance: Slick, non-porous surfaces minimize carbon build-up
  • Reliability: MPI-tested bolt and chamfered lugs for confident lockup
  • Full-auto rated: Built to meet MIL-SPEC durability and function

Technical Specifications

SKU FF556BCGCNITRIDE-CR
UPC 816341029699
Bolt 9310 Tool Steel, MPI inspected, back of lugs chamfered
Carrier Superfinished carrier body
Finish Hard chrome-coated bolt, carrier, gas key, cam pin (wear surface hardness 68–72 HRC)
Extractor S7 extractor (spring, insert, & crane O-ring installed)
Compatibility M16 / AR-15 mil-spec platforms; full-auto rated
Included Complete BCG assembly (bolt, carrier, gas key, cam pin, firing pin, retaining pin)
Country Made in USA — Faxon Firearms