Expo Arms H3 AR-15 Carbine Buffer With OD Green Bumper
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Expo Arms
Overview
The Expo Arms H3 AR-15 Carbine Buffer is designed specifically for AR-15 platforms, featuring a carbine weight that enhances the cycling of your firearm. This buffer type is optimized for use with mid-length gas systems, ensuring smoother operation by balancing bolt speed and reducing recoil. This component is often found in builds chambered in 5.56 NATO, allowing for reliable performance in various shooting applications.
Specifications
Build history on GunPartPicker
Builders on GunPartPicker first added the Expo Arms H3 AR-15 Carbine Buffer With OD Green Bumper to a build in February 2026. Builds with this buffer are mostly chambered in 5.56 NATO (83%, then .308 Win 17%), nearly all on mid-length gas, and mostly AR-15 (89%, then AR-10 11%).
It was out of stock everywhere we track for all of September 2026, and today the one retailer we track is out of stock. Listed prices start at $29.95 at Primary Arms for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 20 builds that include this one
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Strike Industries AR-10 Shift Pins, Black - SI-AR10-SHIFT-BK
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.
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