Cannon Keys Bullet Train is a compact, 40-ish% custom keyboard kit. It’s a simple build and travels easily, with a clean aluminum case and a dedicated LED window.

• Low-profile switch support: It supports Gateron KS33 low-profile switches. You get a slimmer board with a fast, light feel.
• Hot-swap PCB options: Choose wired hot-swap with QMK or wireless hot-swap with ZMK, so you can match your setup and remap keys your way.
• Two spacebar layouts: Pick Big Bar or Split Bars, which helps you tune thumb keys for layers and shortcuts on a small layout.
• FR4 plate and gasket parts: The included FR4 plate, gaskets, and plate foam work together to soften bottom-out and reduce harsh noise.
• Build-ready box contents: Stabilizers, hardware, and angling feet come included, so you can assemble without hunting for core parts.

A smart pick if you want a compact, low-profile build with flexible firmware and layout choices.