Sig Sauer Tread Forward Grip Kit - Black Polymer (KITTRDGRIPFORWARDBLK)

The Sig Sauer Tread Forward Grip Kit brings factory-engineered ergonomics and modularity to any rifle built on an M-LOK mounting interface. Originally designed as the replacement kit for Sig's M400 Tread platform, this black polymer grip system works with any M-LOK rail, making it a smart upgrade for shooters who want a cohesive, purpose-built grip solution without the guesswork of mixing and matching components.

This is a complete kit, not a standalone grip. It gives you multiple mounting options and hand-positioning choices so you can dial in what works for your shooting style and your rifle's geometry. Whether you're setting up a modern tactical rifle, tuning a home-defense build, or maintaining a Sig M400 Tread, the modular approach means you're not stuck with a one-size-fits-all grip angle or forward-assist setup.

All hardware and M-LOK connectors come in the box, so you won't be hunting through spare parts bins or making extra trips to source what you need to install. The black polymer finish matches modern rifle aesthetics and holds up to field use without fussing.

Key Features

• Complete forward grip kit with multiple hand-positioning components
• Compatible with any M-LOK mounting interface
• Includes vertical grip, barricade stop, handstop, and finger stop for versatile setup options
• Short and long M-LOK rail sections for customized fit
• All M-LOK connectors and mounting hardware included
• Black polymer construction
• Factory-engineered solution for Sig M400 Tread rifles and other M-LOK platforms

Specifications

Frequently Asked Questions

Will this forward grip kit work on my M-LOK rail rifle?

Yes. The Sig Sauer Tread Forward Grip Kit is designed to fit any rifle with an M-LOK mounting interface, not just Sig M400 Tread models. M-LOK is an open standard, so compatibility extends across most modern tactical and AR-platform rifles that feature M-LOK slots on the handguard.

What's included in the kit?

The kit includes a vertical grip, barricade stop, handstop, finger stop, both short and long M-LOK rail sections, M-LOK connectors, and all necessary mounting hardware. Everything you need to mount and configure the grip is in the box.

Can I use just the vertical grip, or do I have to use all the components?

The kit is sold as a complete system and includes multiple components designed to work together. The exact configuration and which components you use will depend on your rifle's setup, your hand position preference, and how you plan to shoot. You have the flexibility to choose the hand stops and positioning elements that work best for your needs.

Is this the same as the factory grip on my Sig M400 Tread?

This is the factory replacement kit for the M400 Tread rifle series, so it uses the same engineering and components Sig builds into those rifles. However, the kit is compatible with any M-LOK interface, giving it broader application beyond just the Tread platform.