Click to see full view
FailZero
Overview
The FailZero M16 / AR-15 Exo Coated Bolt Carrier Group is designed for 5.56 NATO caliber firearms, featuring a nickel boron finish that enhances durability and facilitates easier cleaning. The M16 bolt carrier style ensures reliable cycling and performance in semi-automatic and automatic configurations. This bolt carrier group is frequently found in builds utilizing a carbine gas system, making it a solid choice for those looking to optimize their setup for consistent operation.
Specifications
FailZero M16 / AR-15 Exo Coated Bolt Carrier Group
Available Merchants(7)
Prices checked
Price Alert
October 2026 on GunPartPicker
FailZero M16 / AR-15 Exo Coated Bolt Carrier Group ranked #143 of the 258 bolt carrier groups builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #64 of the 549 bolt carrier groups builders have added. Builds with this bolt carrier group are mostly chambered in 5.56 NATO (70%, then .223 Wylde 13%), split between mid-length (43%) and carbine-length (29%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 6 of the 7 retailers we track have it in stock. It dipped to $128.52 at KY Gun Company for a stretch in October 2026, well under its usual $169.99, so sales do come around. Buying today, the lowest price is $128.52 at KY Gun Company, which matches the best price we saw in October.
Trending bolt carrier groups →
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
Not sure which bolt carrier group to pick?
We ranked every bolt carrier group by how often it shows up in real builds on GunPartPicker.
Read the guide: The Most Trusted AR-15 BCGs →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Breek Arms AR-15 Warhammer MOD2 Ambidextrous Charging Handle Black
Tacfire 7" Complete Upper Assembly 5.56x45mm 1:8, Black - BU-556-7
Spikes Tactical Forged Stripped AR-15 Lower - Spider - Bullet Markings
Rise Armament Super Sporting AR15/10 Single Stage Trigger - Flat - Dtom Special Edition
Strike Industries Ambidextrous Magazine Release, Black - ARAMBIMRBK
CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the FailZero M16 / Ar-15 Exo Coated Bolt Carrier Group
| Build | Parts | Total |
|---|---|---|
 | 27 | $2121.30 |
No reviews yet. Be the first to review this product!