Fail Zero M16/M4 Full-Auto BCG – Black
Not Yet Rated | Write the First Review SKU: 222-FAI-FZ-M16/4-01-NH-BLACK
UPC: 94922014276
MFG#: FZ-M16/4-01-NH-BLACK

Fail Zero M16/M4 Full-Auto BCG – Black | EXO Nickel Boron + Tactical Black Finish

Tactical Stealth. Fail Zero Strength. Full-Auto Rated.

The Fail Zero M16/4 Full-Auto BCG – Black blends battle-proven EXO Nickel Boron performance with a low-reflection tactical black finish for shooters who demand both reliability and subtle aesthetics. Designed for AR-15, M4, and M16 upper receivers, this bolt carrier group is fully assembled and full-auto rated—perfect for duty rifles, suppressed builds, or tactical AR setups.

Coated in Fail Zero’s proprietary black overcoat and underlaid with EXO Nickel Boron, this BCG delivers permanent dry lubricity, improved wear resistance, and enhanced corrosion protection, while maintaining a discreet, non-reflective appearance. Over time, contact points naturally wear to reveal the Nickel Boron surface, ensuring functionality without compromising performance.

⚙️ Key Features:

• ✅ Fits Mil-Spec M16, M4 & AR-15 Uppers – Drop-in, full-auto rated M16 cut carrier

• ✅ Black Tactical Exterior with EXO Nickel Boron Core – Stealth finish + proven performance

• ✅ Nickel Boron Treated Critical Parts:

  • Bolt & Extractor (5.56 / .223 / 300 Blackout)
  • Bolt Carrier
  • Cam Pin
  • Carrier Key
  • Firing Pin

• ✅ Reduced Friction & Easy Maintenance – Runs cleaner, cooler, longer

• ✅ Non-Reflective Black Finish – Maintains a tactical edge in the field

• ✅ High Wear Resistance – Coating holds up in suppressed or high-volume shooting

• ✅ No Lube Required – EXO coating delivers dry lubricity under extreme conditions

🔫 Designed for Tactical, Suppressed & Duty-Ready AR Platforms

Whether you’re building a stealthy SBR, configuring a suppressor host, or just want the tactical edge of a blacked-out bolt carrier, the Fail Zero M16/4 Full-Auto BCG – Black is the top-tier choice. It offers all the benefits of Fail Zero’s industry-leading Nickel Boron technology with a covert black exterior built to look sharp and run hard.