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Expo Arms
Overview
The Expo Arms H1 AR-15 Carbine Buffer is specifically designed for carbine-length systems, providing a balanced weight that helps manage recoil and improve overall cycling performance. This buffer is optimized for the AR-15 platform, ensuring compatibility with standard carbine setups. Builders often incorporate this buffer in builds featuring a carbine gas system and chambered in 5.56 NATO, making it a reliable choice for those looking to enhance their rifle's performance.
Expo Arms H1 AR-15 Carbine Buffer With Blue Bumper ranked #33 of the 88 buffers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #52 of the 177 buffers builders have added. Builds with this buffer are mostly chambered in 5.56 NATO (71%, then 300 Blackout 29%), split between pistol-length (38%) and carbine-length (38%) gas systems, and mostly AR-15 (80%, then AR-10 10%).
It was out of stock everywhere we track for all of August 2026, and today the one retailer we track is out of stock. Listed prices start at $17.95 at Primary Arms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every buffer by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Guide →Check it against the live catalog:
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Aggregated and anonymized data showing how builders use this product
Builds in the community that include the Expo Arms H1 Ar-15 Carbine Buffer With Blue Bumper
| Build | Parts | Total |
|---|---|---|
 | 21 | $1277.91 |
 | 16 | $885.41 |
 | 29 | $5008.23 |
 | 18 | $2162.56 |
 | 24 | $697.34 |
 | 27 | $1339.36 |
 | 30 | $3029.01 |
1 global rating
Top reviews
Expo Arms H1 carbine buffer with blue bumper works correctly but install was a bit fiddly - the buffer was a tight fit into the receiver extension initially. Eased after some use. Inside weights dont rattle. Blue bumper is a subtle accent.
