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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.
Prices checked
Expo Arms H1 AR-15 Carbine Buffer With Blue Bumper ranked #36 of the 89 buffers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #41 of the 210 buffers builders have added. Builds with this buffer are mostly chambered in 5.56 NATO (62%, then 300 Blackout 17%), split between mid-length (40%) and carbine-length (30%) gas systems, and nearly all AR-15.
It was in stock most times we checked in October 2026, and today the one retailer we track has it in stock. Prices barely moved in October 2026, holding around $39.99, with no real sale all month. Buying today, the lowest price is $39.99 at Primary Arms, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 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 | $1342.98 |
 | 16 | $952.70 |
 | 29 | $4984.75 |
 | 18 | $2238.40 |
 | 24 | $737.26 |
 | 27 | $1339.64 |
 | 30 | $2897.67 |
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.
