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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
Available Merchants(6)
Prices checked
Price Alert
October 2026 on GunPartPicker
FailZero Exo Coated M16 / AR-15 Bolt Carrier Group - Black ranked #52 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 #65 of the 553 bolt carrier groups builders have added. Builds with this bolt carrier group are mostly chambered in 5.56 NATO (81%, then .223 Wylde 13%), split between mid-length (46%) and carbine-length (27%) 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 5 of the 6 retailers we track have it in stock. Prices barely moved in October 2026, holding around $141.09, with no real sale all month. Buying today, the lowest price is $141.09 at BattleHawk Armory, which matches the best price we saw in October.
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Frequently Built With
The part most often added in each category by the 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
Timber Creek Outdoors Ambidextrous Safety Selector - Black
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 Exo Coated M16 / Ar-15 Bolt Carrier Group - Black
| Build | Parts | Total |
|---|---|---|
 | 22 | $2342.10 |
 | 18 | $1492.45 |
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