FailZero Exo Coated M16 / AR-15 Bolt Carrier Group - Black
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FailZero
Overview
The FailZero Exo Coated M16 / AR-15 Bolt Carrier Group is designed specifically for the 5.56 NATO caliber and features a Nickel Boron finish that enhances durability and resistance to wear. Its M16 bolt carrier style ensures reliable cycling and compatibility with a variety of gas systems, making it an excellent choice for builds that prioritize performance and longevity. This bolt carrier group is commonly found in carbine gas system configurations, making it suitable for a range of applications from tactical to recreational shooting.
Specifications
FailZero Exo Coated M16 / AR-15 Bolt Carrier Group - Black
August 2026 on GunPartPicker
FailZero Exo Coated M16 / AR-15 Bolt Carrier Group - Black ranked #77 of the 229 bolt carrier groups builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #79 of the 445 bolt carrier groups builders have added. Builds with this bolt carrier group are mostly chambered in 5.56 NATO (67%, then 300 Blackout 33%), split between carbine-length (50%) and mid-length (50%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 5 of the 6 retailers we track have it in stock. The best price drifted down from $139.98 to $135.63 over August 2026 without a real sale. Buying today, the lowest price is $141.09 at BattleHawk Armory.
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Frequently Built With
The part most often added in each category by the 17 builds that include this one
Radian Weapons AR-15 Raptor-SD Ambidextrous Charging Handle OD Green
PSA 16" M4 Carbine 1:7 Nitride 13.5" Lightweight M-LOK Freedom Upper w/ MBUS Sight Set - No BCG/CH
Sharps Bros Showdown Stripped Lower Receiver - Black, Unique Design and High-Performance for Custom AR Builds - SBLR11
Rise Armament Super Sporting AR15/10 Single Stage Trigger - Flat - Dtom Special Edition
Magpul AFG-2 Angled Fore Grip - Black
Strike Industries Ambidextrous Magazine Release, Black - ARAMBIMRBK
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 2 →Builds in the community that include the FailZero Exo Coated M16 / Ar-15 Bolt Carrier Group - Black
| Build | Parts | Total |
|---|---|---|
 | 22 | $2349.09 |
 | 18 | $1504.91 |
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