Foxtrot Mike Products AR-15 Fm-9 Heavy Buffer
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Foxtrot Mike Products
Overview
The Foxtrot Mike Products AR-15 FM-9 Heavy Buffer is designed specifically for the AR-15 platform and features a heavy buffer weight classified as "H." This added weight helps to reduce felt recoil and improve cycle reliability, making it suitable for builds that require enhanced performance, particularly with mid-length gas systems. This buffer is commonly used in 5.56 NATO caliber builds, optimizing their operation for smoother shooting and better accuracy.
Specifications
Build history on GunPartPicker
Builders have been adding the Foxtrot Mike Products AR-15 Fm-9 Heavy Buffer to their builds on GunPartPicker since February 2026. All time, it ranks #116 of the 175 buffers builders have added. Builds with this buffer are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, but today the one retailer we track is out of stock. Prices barely moved in August 2026, holding around $17.99, so there haven't been real sales lately. Listed prices start at $17.99 at Optics Planet 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 12 builds that include this one
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Wilson Combat AR-15 Starburst Gunfighter Pistol Grip Black
Strike Industries Extended Bolt Catch
Noveske AR-15 Takedown & Pivot Pin Set
Geissele Automatics AR-15 Premium Buffer Tube Ddc
Rise Armament AR-15 Magazine Release Button - Rise Red
Builds Featuring This Part
See all 1 →Builds in the community that include the Foxtrot Mike Products Ar-15 Fm-9 Heavy Buffer
| Build | Parts | Total |
|---|---|---|
 | 14 | $872.63 |
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