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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.
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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Aggregated and anonymized data showing how builders use this product
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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