Ergo 4231BK Mini Max Vertical Forward Grip - Aluminum, Black Ribbed Anodized Finish for Keymod Rail

The Ergo 4231BK Mini Max Vertical Forward Grip is a lightweight, modular solution for shooters running KeyMod-equipped AR platforms. Built from 6061-T6 aluminum with a black ribbed anodized finish, this forward grip mounts flush to any KeyMod slot, giving you a compact vertical control point without the bulk or weight penalty of full-size grips. Whether you're setting up a short-barreled rifle, a precision MSR, or a carbine optimized for confined spaces, the Mini Max delivers ergonomic hand placement in a form factor that won't hang off your handguard like an afterthought.

Forward grips have become standard kit for modern shooters—they improve weapon control, reduce muzzle rise, and give your support hand a purposeful purchase point during transitions and recoil management. The Mini Max design trades maximum hand coverage for minimal footprint, making it ideal if you're balancing ergonomics with a lightweight, compact rifle build. The ribbed anodized finish is durable enough for hard use and won't snag on gear or gloves.

This is a straightforward bolt-on accessory: if your rifle has KeyMod slots on the handguard, you've got a mounting point. No adapters, no guesswork. The aluminum construction keeps weight down, which matters when you're spending all day behind the gun. Setup takes seconds, and the flush mount means it won't catch on your kit or add unnecessary width to an already-tight rifle platform.

Key Features

• Compact vertical grip profile ideal for short-barreled and lightweight AR builds
• 6061-T6 aluminum construction for strength and minimal weight
• Black ribbed anodized finish for durability and corrosion resistance
• Flush-mount design for KeyMod rails—no offset or adapter needed
• Ergonomic hand positioning for improved control and recoil management

Specifications

Frequently Asked Questions

Will this grip fit my KeyMod handguard?

Yes. The Ergo 4231BK is designed to mount flush to any KeyMod slot. If your handguard features standard KeyMod mounting slots, this grip will attach directly without adapters.

Is this grip ambidextrous?

The supplied facts do not specify ambidextrous functionality. Contact us if left-hand mounting compatibility is important for your build.

How much does the Mini Max add to rifle weight?

The supplied facts do not include the grip's weight. The 6061-T6 aluminum construction is designed to be lightweight relative to other forward grip options, but specific weight data is not available.

What's the difference between the Mini Max and Ergo's full-size vertical grips?

The Mini Max is a compact version designed for shooters prioritizing minimal footprint and weight over maximum hand coverage. It mounts the same way as larger Ergo grips but in a smaller overall profile, making it popular for short-barreled rifles and builds where space is at a premium.