ZEV Technologies, Fiber Optic Combat Sight Set For Sig Slides, Black A clean serrated face for a glare free sight picture Improved accuracy due to ease of target transition and acquisition Notch width of .140 & Notch Dept of .145 will allow you enough room to keep your eyes on target during transitions CNC-machined carbon steel construction Black nitride coated for hardness and resistance to wear Compatible with SIG Sauer P320 and P365 slides ZEV Combat Sight set gives you everything you need to upgrade your sight picture to shoot like the pros.