Foxtrot Mike Products 9mm AR Pistol Buffer Tube Kit

Manufactured by Foxtrot Mike Products
1 Reviews


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Out of Stock


The FM Products 9mm AR pistol buffer tube kit is a huge upgrade compared to other pistol buffer kits. Foxtrot Mike Products only uses the best materials and manufacturing processes to ensure a quality product reaches your gun. If you are building a pistol caliber AR, this buffer tube assembly comes with all you need for a reliable firearm. The buffer tube is made from 7075-T6 aluminum and has a hardcoat anodized finish to resist surface wear. A dry film lube coating is then applied inside and out to facilitate a smooth operating buffer. The Buffer weight is a heavy 6.5 ounces to slow down the bolt cycle for a more controllable and reliable firearm. It is made from pre-hardened 8620H steel and features the same finish as the buffer tube to reduce wear. This extended length buffer is designed specifically for 9mm AR pistols and ensures proper function with minimal bolt bounce. The FM Products AR-15 pistol buffer tube kit comes with all you need for a reliable, low recoil, 9mm AR pistol build.

Buffer Tube: 
  • Made from 7075-T6 aluminum
  • Hardcoat anodized with a dry film lube coating
  • Pistol length buffer tube compatible with all pistol braces
  • Mil-Spec 1.12” O.D.

FM-9 heavy buffer:
  • Made from 8620H steel
  • 6.5 ounces extended length
  • No spacers required
  • Hardcoat anodized with dry film lube coating

Recoil Spring:
  • Made from stainless steel music wire
  • .308 carbine heavy duty recoil spring
  • Ensures reliable cycling with all ammo loads

This 9mm pistol buffer tube kit by FM products comes with a .308 carbine recoil spring that is made from stainless steel music wire. After extensive testing, it was found that this style of recoil spring is optimal, when paired with the FM-9 buffer, to reliably cycle all types of 9mm ammunition. Another benefit of this buffer tube assembly is the ability to use any pistol brace on the market. The buffer tube has a Mil-Spec 1.12” outside diameter, so you can attach a brace and more accurately shoot your AR pistol. If you are in the market to build a 9mm AR-15, you can’t go wrong with quality FM Products like the dedicated 9mm buffer tube kit.

Feature rich, high-quality, and affordable, Foxtrot Mike Products offer cutting edge solutions utilizing the highest quality materials and manufacturing processes available.


BrandFoxtrot Mike Products
TypeStock Hardware Kit

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

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This set is a dream!!


Everything about this setup was spot on made shooting so much fun for the whole family!! My 90 pound wife was scared to shoot but this made it fun for her!!