SPIKE’S BCG 5.56 NIB
$185.39
Upgrade your AR-15 or M16 with the SPIKE’S BCG 5.56 NIB, featuring a robust Nickel Boron (NiB) finish for unmatched durability and corrosion resistance. Manufactured by Spike’s Tactical, this high-performance bolt carrier group is a trusted choice for serious enthusiasts and professionals seeking reliability and precision in their builds.
20 in stock
The Spike’s Tactical BCG is a 5.56 bolt carrier group for AR-15 and M16 platforms. It features a Nickel Boron (NiB) finish.
This firearm part is identified by manufacturer part number SPKST5BG03 and UPC 855319005501.
- Manufacturer: Spike’s Tactical
- Category: Parts
- Caliber: 5.56
- Finish: Nickel Boron (NiB)
- Manufacturer Part Number: SPKST5BG03
- UPC: 855319005501
| Weight | 0.875 lbs |
|---|---|
| Dimensions | 9.000 × 2.250 × 2.250 in |
| Manufacturer | Spike’s Tactical |
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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