The only pistol in its class to include a slide-mounted reflex optic, the ROMEO1, the RX will ensure faster sight acquisition on target. Simply put, it will make a good shooter a great shooter. No other manufacturer offers a pistol with a reflex sight ready to go out of the box. Shoot confidently with faster target acquisition and improved accuracy. Installed. Zeroed. And backed by the quality of the SIG name.

The P320 Full-Size offers a smooth, crisp trigger to make any shooter more accurate, an intuitive, 3-point takedown and unmatched modularity to fit any shooter and any situation. Its full-size frame is ideal for target shooting, home defense and any scenario where shootability and sighted accuracy are of the highest priority. This modular, striker-fired pistol features a full-size grip, full length slide, and choice of contrast or SIGLITE Night Sights. Available in 9mm. Safety features include a striker safety, disconnect safety. 

ROMEO1

The ROMEO1 features a molded glass aspheric lens with high performance coatings for superior light transmittance and zero distortion. Manual illumination controls remember your last used settings. Three MOA Red-Dot with multiple intensity settings ensures rapid target engagement under a full range of lighting conditions. The readily available CR1632 battery is top-loading, allowing for quick battery replacement without having to remove the sight from the firearm. Extremely strong and lightweight aircraft grade CNC Magnesium housing ensuring a lifetime of reliable service. Dependable waterproof (IPX-7 rated for complete immersion up to 1 meter) and fog-proof performance.