Ameriglo XL optic-compatible pistol sight set for Glock pistols. LumiGreen tritium front and outline rear, sized to co-witness with a slide-mounted red dot. Tall (.315" front / .394" rear) profile clears the lower edge of an optic window for a standard lower-third co-witness on optic-cut Glock slides. Brand: Ameriglo Manufacturer Part Number: 430110312 Front sight: .315" tall, LumiGreen tritium Rear sight: .394" tall, LumiGreen outline XL / optic-compatible profile - co-witnesses with most slide-mounted red dots and suppressor sights Sold as front + rear set Fits standard-size Glock pistols (verify your specific generation and frame size before ordering) GLOCK is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, Glock, Inc. or Glock Ges.m.b.H. The use of "Glock" on this page is merely to advertise the sale of aftermarket Glock-compatible pistol components. For genuine Glock, Inc. and Glock Ges.m.b.H products, visit https://us.glock.com .