CMMG Stainless Steel Buffer Assembly for AR-15 Style Rifle - 55CA9A7
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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.
Specifications
Available Merchants(7)
Prices checked
Price Alert
September 2026 on GunPartPicker
CMMG Stainless Steel Buffer Assembly for AR-15 Style Rifle - 55CA9A7 ranked #19 of the 86 buffers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #14 of the 194 buffers builders have added. Builds with this buffer are split between 5.56 NATO (59%) and .223 Wylde (29%), mostly on mid-length gas (73%, then rifle-length 18%), and mostly AR-15 (93%).
It was in stock most days in September 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 September 2026, well under its usual $27.79 to $28.46, so sales do come around. Buying today, the lowest price is $26.49 at Ammunition Depot, above September's low of $20.24, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
CMMG AR-15 HD Pivot and Takedown Pin Parts KIT - 55AFF3B
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Wilson Combat AR-15 Lower Receiver Forged
Strike Industries AR-15 Ambidextrous Safety Selector Switch - Red
Magpul MOE K2 Grip Polymer Gray
Phase 5 Version 2 Extended Bolt Release, 2.15" - EBRV2
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.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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