FailZero 5.56 Full Auto Bolt Carrier Group
$127.44
Fully assembled 5.56 bolt carrier group with EXO Nickel Boron coating for enhanced durability and performance. Drop-in ready for mil-spec AR-15 upper receivers.
2 in stock
This Bolt Carrier Group (BCG) comes fully assembled and ready to drop into most mil spec M16 M4 or AR15 upper receivers. All critical parts are coated with EXO Nickel Boron technology that provides permanent dry lubricity extreme durability and increases both wear and corrosion resistance. Our patented Nickel Boron coating will reduce friction and improve the overall performance of your rifle.
Nickel Boron treated parts include:
- Bolt & Extractor (5.56/.223 compatible)
- Bolt Carrier
- Extractor
- Cam Pin
- Carrier Key
- Firing Pin
| Weight | 0.813 lbs |
|---|---|
| Dimensions | 11.000 × 4.000 × 1.750 in |
| Manufacturer | FailZero |
| Finish | EXO Nickel Boron |
| Material | Nickel Boron |
| Compatible With | most mil spec M16 M4 or AR15 upper receivers |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.
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