KMX KeyMod Rail Series

The KMX Series KeyMod Free Float Rail features a slim profile for improved ergonomics and allows the shooter a modular platform using the the KeyMod rail attachment system.

The KMX Series uses the FREELOK Clamping System (US. PAT. NO. 9,389,043 B1). Includes a non-indexing barrel nut and clamping system (FREELOK) that utilizes free floating tabs to secure the rail to the receiver. FREELOK provides both frictional and mechanical locking forces to create a rock-solid bond between the rail and barrel nut.

  • KMX Series feature KeyMod Compatible mounting system
  • Free Float Hand Guard
  • Durable 6061-T6 Aluminum Construction
  • FREELOK Barrel Nut and Clamping System
  • Hard Coat Anodized Finish
  • Two Quick Detach Sockets

Designed to be used with pistol length, carbine length, mid length, or Mil-Spec M16 rifle length gas systems.

For your safety, Trinity Force recommends this part be installed by a competent, qualified gunsmith/installer with an understanding of the weapon platform that the part is being installed on. Always make sure the firearm is unloaded and pointed in a safe direction when working.

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Height (in)

1.97 Front, 2.37 Rear

Width (in)

1.47 Front, 1.55 Rear

Inner Diameter (in)


Type of Aluminum


Coating Type

Hard Coat Anodized Finish

Interface Type

M-LOK®, MIL-STD-1913