CMMG 9mm Carbine Buffer For AR Rifles, Black - 90CA9B4
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CMMG
Overview
The CMMG 9mm Carbine Buffer is designed specifically for AR rifles that operate with a carbine buffer tube, providing the necessary weight and function for reliable cycling in 9mm builds. As a buffer-only assembly, it plays a critical role in absorbing recoil and managing bolt movement, ensuring smoother operation and improved performance. This buffer is commonly found in builds focusing on 9mm configurations, catering to those looking for a compact and efficient setup.
Specifications
Available Merchants(4)
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Price Alert
Build history on GunPartPicker
Builders on GunPartPicker first added the CMMG 9mm Carbine Buffer For AR Rifles, Black - 90CA9B4 to a build in March 2026.
It was hard to find in September 2026, in stock on only 12 of the 22 days we checked, and today only GritR Sports has it in stock. It dipped to $22.49 at BattleHawk Armory for a stretch in September 2026, well under its usual $29.98 to $33.46, so sales do come around. Buying today, the lowest price is $29.98 at GritR Sports, above September's low of $22.49, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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