The 407K X2 is an open reflex optical sight designed for subcompact pistol applications. The 407K X2 improves on previous the version by adding Lock Mode which was first introduced in our 2018 LEM pistol optic models. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes.
Additional features include Holosun’s Super LED with up to 50k hour battery life, a crisp 6MOA dot, and Shake Awake. The durable housing is made from 7075 Aluminum, uses Holosun’s K footprint, and houses the 1632 battery in a side-mounted tray for easy replacement when needed. The 407K X2 is a direct for P365X/XL, and requires an adapter plate for slides with a four-boss interface.
Granite Ridge's Take
The Holosun 407K X2 is a compact open-emitter optic designed around slim and subcompact pistol applications. Its smaller footprint keeps the optic proportional to narrow slides, making it a popular alternative to larger full-size sights. For buyers who want a simple compact red dot without paying for a multi-reticle system, the 407K X2 is a natural starting point.
Buying & Compatibility Notes
Compare with 507K X2 for additional reticle flexibility and EPS Carry for an enclosed emitter.
