CNC-machined from billet steel and finished with QPQ Nitride for exceptional durability, corrosion resistance, and long-lasting performance; Delivers unparalleled brightness with ultra-bright fiber optics; FiberLok technology allows shooters to quickly and easily change fiber colors for customizable and adaptive sighting; Tactical-style cut with a ledge, facilitating one-handed slide operation; Wide rear notch for easy target acquisition; Serrated anti-glare face on both front and rear sights; Optional green front fiber optic included; Compatible with Beretta M9A4/92Xi models