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CMMG
Overview
The CMMG Stainless Steel Buffer Assembly is designed for AR-15 style rifles, featuring a parts kit that includes all necessary components for a reliable buffer system. With a rifle buffer tube type, this assembly ensures smooth cycling and optimal performance in mid-length gas system builds, particularly when chambered in 5.56 NATO. This buffer assembly is commonly found in setups prioritizing stability and consistent operation.
CMMG Stainless Steel Buffer Assembly for AR-15 Style Rifle - 55CA9A7 was the eighth most added buffer on GunPartPicker in August 2026, behind the Aero Precision AR-15 H3 Buffer, with about 2% of all buffers added to builds. Up from #13 in July.
It was in stock most days in August 2026, and today 5 of the 7 retailers we track have it in stock. It dipped to $20.24 at BattleHawk Armory for a stretch in August 2026, well under its usual $26.76 to $28.46, so sales do come around. Buying today, the lowest price is $26.76 at Classic Firearms, above August's low of $20.24, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 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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