From Sig Sauer's website: The Next Generation of  M18 is here, delivering all the performance and reliability that made the  M18 the choice of the U.S. Military, now outfitted with the most advanced XSeries features. The  M18X each include a factory mounted ROMEO-M17 red dot optic featuring a ruggedized aluminum housing, aspheric glass lens for zero distortion, and is fully enclosed and sealed, for ultimate protection from the elements. This pistol also features an XSeries coyote tan grip module with extended beavertail, aggressive grip stippling and deeper undercuts for greater control. The XSeries grip module is also fitted with a magwell extension for faster and more accurate reloads. The XSeries flat blade trigger provides an increased tactile response for greater accuracy.

  • ROMEO-M17 Red Dot Sight installed on the slide
  • Coyote X-Carry grip module with magwell
  • Flat XSeries trigger
  • (3) 21rd magazines

A manual safety – when engaged – is designed to mechanically prevent the firearm from discharging when the trigger is pressed, either intentionally or unintentionally. You should consider whether a manual safety on a handgun is right for you based on your experience level and intended use, keeping in mind best practices for safe firearms handling. It is possible for the trigger to be unintentionally pressed even under normal handling circumstances.

A manual safety is designed to augment, not replace, safe firearm handling practices. You are responsible to protect against unintentional trigger movement while carrying any firearm. Even if you elect to purchase a pistol equipped with a manual safety, you must ensure that the trigger is not contacted in any circumstance other than when you intend to fire the pistol, particularly if you elect to carry your pistol with a round in the chamber.   If you have a round in the chamber and the trigger is pressed to the rear, the pistol will fire, absent an engaged manual safety.