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Rock River Arms
Overview
The Rock River Arms 9mm Carbine Buffer is designed for AR-15 builds that utilize a carbine-length system, specifically tailored for 9mm configurations. This buffer's carbine weight helps optimize the cycling of your firearm, ensuring reliable function and reduced recoil during operation. You’ll commonly find this buffer in builds focused on 9mm conversions, where smooth cycling is crucial for accuracy and performance.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today both retailers we track have it in stock. Prices barely moved in October 2026, holding around $28.49, with no real sale all month. Buying today, the lowest price is $27.95 at Brownells, which matches the best price we saw in October.
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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