Expo Arms 5.56 NATO Complete M16-Cut AR-15 Bolt Carrier Group - Nitride
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Expo Arms
Overview
The Expo Arms 5.56 NATO Complete M16-Cut AR-15 Bolt Carrier Group features a nitride finish, which enhances durability and corrosion resistance while ensuring smooth operation in your firearm. This M16-style bolt carrier is designed to function reliably with 5.56 NATO ammunition, making it a solid choice for builds utilizing a carbine gas system. Builders frequently incorporate this BCG into standard AR-15 configurations where performance and reliability are key.
Specifications
Build history on GunPartPicker
Builders have been adding the Expo Arms 5.56 NATO Complete M16-Cut AR-15 Bolt Carrier Group - Nitride to their builds on GunPartPicker since May 2026. All time, it ranks #184 of the 442 bolt carrier groups builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today the one retailer we track has it in stock. Prices barely moved in August 2026, holding around $129.95, so there haven't been real sales lately. Buying today, the lowest price is $129.95 at Primary Arms, which matches the best price we saw in August.
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Frequently Built With
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with 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 Expo Arms 5.56 Nato Complete M16-Cut Ar-15 Bolt Carrier Group - Nitride
| Build | Parts | Total |
|---|---|---|
 | 22 | $1415.78 |
 | 16 | $573.88 |
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