5KU Adjustable Thumb Rest for Hi-Capa GBB, Silver

The Hi-Capa platform dominates competitive airsoft for one reason: it's a blank canvas. You build it around your grip, your sights, your trigger. The thumb rest is where that customization starts.

This 5KU adjustable thumb rest gives you a consistent anchor point for your support thumb. In dynamic stages, that consistency matters more than raw speed — a repeatable grip position means your sight picture stays where you expect it when you transition between targets.

The adjustment lets you dial in the angle and height to match your hand. A thumb rest that's too high fights your natural grip; too low and you're reaching. This one moves so you find the spot that disappears into your hold.

What you're working with. Metal and polymer construction keeps it durable without adding unnecessary weight. The silver finish matches standard Hi-Capa slide and frame treatments. It's built for the 2011/Hi-Capa platform specifically, so it won't fit a Glock or a P226.

Before you buy. Installation usually requires fitting to your specific frame. Some frames need light sanding or file work to seat properly. If you're new to competitive pistol building, budget time for test-fitting or have a tech handle it. This isn't a drop-in-and-forget part — it's a tuned component.

Includes one adjustable thumb rest. Installation hardware not guaranteed — check your frame's requirements before you start.